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Straight Rules / Carpenter's Squares / Protractors

The straight, curved / convex, tape measure, and scale / distance measuring instruments are tools for measuring length. A straight scale is a straight bar or plate with a scale. A curved ruler is a metal ruler bent at a right angle, and is often used by carpenters. Convex is a measure that uses a convex metal plate. It is also called a tape measure, but a fabric tape measure is not called a convex. A scale is a measuring instrument with scales such as dimensions and degrees, and there are distance measuring instruments that use lasers and tools that measure distance while walking.
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  1. Straight Ruler
    MonotaRO Straight Ruler
    For measuring dimensions. For drawing work. For marking work. * Be careful when handling as the end face is sharp. * Please use gloves when working. * Do not use in places where electricity may come into contact.
    Scale Interval, Bottom (mm)  0.5  Scale Interval, Top (mm)  Surface Treatment  Silver finish  Material  Stainless steel  Length Tolerance (mm)  ±0.15 
    Rating:
    83%
    from S$2.49
    Min. 2 days
  2. Straight Ruler Stainless Steel with Red Numbers JIS
    Shinwa Rules Straight Ruler Stainless Steel with Red Numbers JIS
    JIS 1 grade (15 cm to 2 m). It has an inch conversion table and a screw pilot hole table on the back side. (From 15cm to 1m. No more than 1.5m) The scale is chrome-plated, making it difficult to remove. Utilizing the surface of the stainless steel material as it is, we provide it at a reasonable... Read More
    JIS Standard Certification  Acquired  Material  Stainless steel 
    Rating:
    83%
    from S$3.39
    Min. 2 days
  3. Curve Scale Silver Thick Wide
    Shinwa Rules Curve Scale Silver Thick Wide
    A thick and wide type that is strong against impact and does not easily get out of angle. Suitable for ironwork and civil engineering work. Very convenient when injuring metal. It is an easy-to-see full-scale silver finish (matte finish) that suppresses the reflection of light on the surface. Wit... Read More
    Right Angle Accuracy  0.1mm or less per 100mm  Thickness (mm)  2.0  Width (mm)  20  JIS Standard  Conformity  Specification  JIS mark with red numbers  Shape  Same thickness 
    Rating:
    94%
    from S$45.99
    Min. 2 days
  4. Aluminum straight scale Alsuke (with non-slip)
    Shinwa Rules Aluminum straight scale Alsuke (with non-slip)
    Uses large and clear scale numbers. Light and durable without rusting. With Danger Prevention Wall-Higher than the cutting surface so the cutter won't slip over. A sponge is attached to the back side, so you can hold the ruler with a light force. Used for length measurement, grooving and cutt... Read More
    Material  Aluminum  Type of Scale  Meter scale 
    Rating:
    94%
    from S$6.99
    Min. 2 days
  5. Silver Fine Scale
    SK (Niigata Seiki) Silver Fine Scale
    Easy-to-read step scale. The silver finish suppresses reflections on the surface and makes the scale easy to read. 150-1000 mm: Upper 1 mm scale, lower 0.5 mm scale. 1500, 2000mm: Upper 1mm scale, lower 1mm scale. The front and back scales are SV-150KD only. For drawing, marking work, and dimensi... Read More
    JIS Standard Certification  Acquired  Material  Stainless steel (SUS420J2) 
    Rating:
    93%
    from S$6.49
    Min. 2 days
  6. Straight Scale Silver
    TRUSCO Straight Scale Silver
    The blasted finish suppresses light reflection and makes the scale easier to see. It is hard to disappear because of the etching scale. Comes with an inch conversion table and screw pilot hole diameter table. It is a JIS1 grade product. (TSU15N-TSU200N) Draw, mark, and measure dimensions.
    Cell Spacing (mm)  (Lower) 0.5  Scale Interval, Top (mm)  1mm  JIS Standard Certification  Acquired  Material  Stainless steel (SUS420J2) 
    Rating:
    93%
    from S$3.99
    Min. 2 days
  7. Easy-to-measure scale seal
    SK (Niigata Seiki) Easy-to-measure scale seal
    It is a strong adhesive sheet that can be pasted and peeled off. It is a step-like scale that makes it easy to see the scale in 1 mm units. Simple measurement is possible by sticking it on personal belongings
    RoHS directive (corresponding to 10 substances)  Correspondence  Set Contents  White x 1, Black x 1 
    from S$2.79
    Min. 2 days
  8. White Sunday (White)
    Shinwa Rules White Sunday (White)
    Since the corners are thin and flat, it sticks perfectly to fine materials, making it easy to mark and measure. There is an inner scale of the outer angle base point.
    Front Scale on Shorter Rule  (Outside) 15cm, (Inside) 5mm pitch 15cm  Back Scale on Shorter Rule  (Outside) 15cm, (inside) round eyes  Front Scale on Longer Rule  (Outside) 30cm, (Inside) 5mm pitch 30cm  Back Scale on Longer Rule  (Outside) 30cm, (inside) corner eyes  Right Angle Accuracy  0.1mm or less per 100mm  Thickness (mm)  1.3  Measuring Range (mm)  300  Long Branch × Width × Thickness (mm)  330(165)×15×1.1  Dimension (mm)  330×163  Mass (g)  67  Material  Iron + painting  Shape  Same thickness  Length Tolerance (mm)  ± 0.3 or less 
    Rating:
    96%
    from S$4.89
    Min. 2 days
  9. Five Dimension Master Stainless
    Shinwa Rules Five Dimension Master Stainless
    Curved scale used for length measurement, right angle confirmation and marking work * Do not use in places where there is a risk of contact with electricity.
    Front Scale on Shorter Rule  (Outside) 2.5 inch  Back Scale on Shorter Rule  (Outside) 2.5 inch  Back Scale on Longer Rule  (Outside) 5 inch  Front Scale on Longer Rule  (Outside) 5 inch  Right Angle Accuracy  0.1mm or less per 100mm  Thickness (mm)  1.2  Width (mm)  10  Longer Rule (mm)  160  Long Branch × Width × Thickness (mm)  160(80)×10×1.2  Mass (g)  20  Measuring Range  5 inch  Shorter Rule (mm)  80  RoHS directive (corresponding to 10 substances)  Correspondence  Scale  Same on both sides  Shape  Same thickness  Material  Stainless steel  Length Tolerance (mm)  ± 0.2 or less 
    Rating:
    83%
    from S$9.59
    Min. 2 days
  10. Circular Saw Guide Ruler Justy Quick Adjust
    Shinwa Rules Circular Saw Guide Ruler Justy Quick Adjust
    Since the round saw guide part is made of stainless steel, it is durable and can be cut stably. The angle (20 ° to 160 °) can be set freely. Comes with a quick adjust mechanism that can be fixed smoothly at a fixed angle (45 °, 90 °, 135 °). Comes with a 3 to 8 inch gradient scale. Even wide mate... Read More
    Main Unit Dimensions (mm)  350×105×26  Specification  Quick adjust 23cm  Mass (g)  360  Included Accessories  1 abandoned tree, stopper screw (flat)  Angular Accuracy (mm)  1 or less per 300 (at 90 °) 
    Rating:
    87%
    from S$39.99
    Min. 2 days
  11. Curve Scale Thick Wide Silver with Magnet
    Shinwa Rules Curve Scale Thick Wide Silver with Magnet
    Useful when scratching metal. It can be attached to scaffolding etc. so as not to drop the music scale when working at heights. There are 3 super strong magnets. By attaching magnets to only the short branches in 3 places, you can make fine adjustments in case of injury. Contains red numbers. For... Read More
    Squareness (mm)  0.1 or less per 100mm  Thickness (mm)  2.0  Width (mm)  20  RoHS directive (corresponding to 10 substances)  Correspondence  Shape  Same thickness  Length Tolerance (mm)  ±0.2 
    Rating:
    83%
    from S$35.99
    Min. 2 days
  12. Circular Saw Guide Ruler Swivel Angle Neo
    Shinwa Rules Circular Saw Guide Ruler Swivel Angle Neo
    A sturdy metal screw that eliminates the damage that is often associated with plastic screws. Flap type screws that do not get in the way and are easy to knob. The abutment part of the three-dimensional structure that is hard to deform. Wide guide that is hard to shake. With a protective cap that... Read More
    Material  Body: Stainless steel / aluminum 
    Rating:
    95%
    from S$56.99
    Min. 2 days
  13. Round saw guide ruler Justy Ⅱ 23cm
    Shinwa Rules Round saw guide ruler Justy Ⅱ 23cm
    A sturdy metal screw that eliminates the damage that is often associated with plastic screws. Guide ruler used when cutting material with a circular saw * Do not use for any other purpose.
    Dimension (mm)  350×105×26  Mass (g)  360  Trusco Part No.  444-3098  Angular Accuracy (mm)  90 °: 1 per 300mm  Material  Body: Stainless steel / aluminum 
    Rating:
    80%
    from S$25.99
    Min. 2 days
  14. Methacrylic Straight-line Ruler 15cm
    Kyoei Plastic Methacrylic Straight-line Ruler 15cm
    Overall Length (mm)  150  Thickness (mm)  2.5  Width (mm)  30 
    from S$2.29
    Min. 2 days
  15. Round saw guide ruler mini free angle quick adjustment
    Shinwa Rules Round saw guide ruler mini free angle quick adjustment
    Since the round saw guide part is made of stainless steel, it is durable and can be cut stably. The angle (20 ° to 160 °) can be set freely. Comes with a quick adjust mechanism that can be fixed smoothly at a fixed angle (45 °, 90 °, 135 °). Comes with a 3 to 8 inch gradient scale. Even wide mate... Read More
    Specification  Quick adjust 30cm  Angular Accuracy (mm)  1 or less per 300 (at 90 °)  Included Accessories  1 abandoned tree, stopper screw (flat)  Main Unit Dimensions (mm)  439×100×26  Mass (g)  460 
    from S$64.99
    Min. 2 days
  16. Circular saw guide ruler Free angle Neo 37cm
    Shinwa Rules Circular saw guide ruler Free angle Neo 37cm
    It is a 37 cm size that is ideal for floor materials. 1. 1. Optimal size for cutting floor materials: 37 cm size ideal for angle cutting of floor materials. 2. Thin and sturdy metal screw ... Since it is a thin metal screw with a foldable knob, it does not get in the way of the circular saw and t... Read More
    Main Unit Dimensions (mm)  535×142×20  Mass (g)  650  Trusco Part No.  756-9009  Included Accessories  1 abandoned tree  Angular Accuracy (mm)  1.3mm or less per 370mm at 90 ° 
    Rating:
    80%
    from S$64.99
    Min. 2 days
  17. Round saw guide ruler  Mini free angle  Ⅱ  30cm
    Shinwa Rules Round saw guide ruler Mini free angle Ⅱ 30cm
    A sturdy metal screw that eliminates the damage that is often associated with plastic screws. Guide ruler used when cutting material with a circular saw * Do not use for any other purpose.
    Included Accessories  1 abandoned tree  Measurement Range (cm)  30  Dimension (mm)  439×112×23  Trusco Part No.  444-3101  Mass (g)  450  Angular Accuracy (mm)  90 °: 1 per 300mm 
    from S$43.99
    Min. 2 days
  18. Universal bevel protractor
    Riken Measuring Instrument Factory Universal bevel protractor
    Used as an angle measurement, assembly, and processing standard for machines, dies, jigs, etc.
    Mass (g)  450  Blade Length (mm)  150、300  Specification  With lens  Accuracy Grade  Class B product (polished finish)  Minimum Reading (minutes) 
    from S$299.90
    Min. 2 days
  19. Universal Bevel Protractor
    Mitutoyo Universal Bevel Protractor
    A precision protractor used as a standard for angle measurement, assembly, and machining of machines, dies, jigs, etc. Minimum reading 5' * We do not deliver to private homes (detached houses / apartments). * For separately shipped products, if you order by cash on delivery, it will be shippe... Read More
    Blade Length (mm)  150、300  Mistutoyo Product No.  187-901 
    from S$459.90
    Min. 2 days
  20. Circular saw guide ruler Free angle one touch
    Shinwa Rules Circular saw guide ruler Free angle one touch
    After setting the angle, you can fix the ruler to the material with one touch. You can work without holding a ruler. With an easy-to-read gradient scale. The transparent polycarbonate plate makes it easy to see the cutout position. It can be fixed with a needle to soft materials such as gypsum bo... Read More
    Angular Accuracy (mm)  90°:±3.5/1000rad  Material  Body: Stainless steel / aluminum  Straightness (mm)  ± 0.5 or less 
    from S$279.90
    Min. 3 days
  21. Protractor No.600 2
    SK (Niigata Seiki) Protractor No.600 2
    * We do not deliver to private homes (detached houses / apartments). * Products with proofreading cannot be canceled after ordering. * For products with calibration documents and traceability system diagrams, we can only accept orders on the web. * Documents applicable only to products that inclu... Read More
    Minimum Reading (°)  0.5  Angle Measuring Range (°)  0~180°  Number  Thickness of Rule (mm)  2.5  Thickness (mm)  3.2  Diameter (Φmm)  320  Trusco Part No.  377-6328  Length of Rule (mm)  823  RoHS directive (corresponding to 10 substances)  Correspondence  Material  Stainless steel (SUS420J2)  Accuracy (min)  ±15 
    from S$469.90
    Min. 4 days
  22. Circular saw guide ruler Free angle multi
    Shinwa Rules Circular saw guide ruler Free angle multi
    The guides can be exchanged and each unit has 3 roles. 30 cm is standard equipment and can be replaced with an aluminum guide (sold separately), and it can be 45 cm or 60 cm, so there is no need to carry multiple units. With a slider that does not shake. Guide ruler used when cutting material wit... Read More
    Main Unit Dimensions (mm)  455×390×23(90°)  Angular Accuracy (mm)  1 or less per 300 (at 90 °)  Mass (g)  (Main unit) 750, (Slider) 130 
    from S$97.99
    Min. 5 days
  23. Free Guide PRO
    Tajima (TJM DESIGN) Free Guide PRO
    Free guide that can cut angles with a sense of stability without slipping Angle cutting ruler for circular saws * Since there is a risk of pinching your hands or fingers, slowly turn the guide and holding plate. * Please read the instruction manual. Product specifications are subject to change wi... Read More
    Scale Angle  15°~165° 
    from S$87.99
    Min. 3 days
  24. Polica stop ruler
    TRUSCO Polica stop ruler
    Can be drawn at right angles or 45 ° Polycarbonate makes it difficult to damage objects. Polycarbonate is stronger than ABS. Can also be used for round objects.
    Thickness (mm)  63  Overall Length (mm)  About 170  Material / Finish  Polycarbonate  Trusco Part No.  274-6875  Mass (g)  50  Width (mm)  55 
    from S$9.79
    Min. 2 days
  25. 100mm [Vertical / Downward] Scale
    ESCO 100mm [Vertical / Downward] Scale
    Esco Part No.  EA948J-202 
    from S$7.49
    Min. 6 days
  26. 90mm Protractor (Round)
    ESCO 90mm Protractor (Round)
    Esco Part No.  EA720WS-41 
    from S$39.99
    Min. 6 days
  27. Angle block set
    FUJITOOL Angle block set
    Angle inspection block. This block is made up of 12 different angles, and can be combined to set angles from 15'to 115 ° 45'. Completely hardened and fully polished.
    Length (mm)  76 
    from S$1,299.00
    Min. 5 days
  28. Straight Ruler Silver
    Shinwa Rules Straight Ruler Silver
    It is JIS 1st grade. The silver finish (matte finish) suppresses reflections on the surface, making the scale easier to read. With etching processing + plating scale, performance does not deteriorate even under harsh usage conditions. For length measurement, line drawing, and marking work. * Depe... Read More
    JIS Standard Certification  Acquired  Material  Stainless steel 
    Rating:
    93%
    from S$4.29
    Min. 2 days
  29. Curve measure Thick wide
    MonotaRO Curve measure Thick wide
    Stainless steel square for ironwork and construction. Entering red numbers. JIS certified factory manufactured products. made in Japan. Ideal for work at ironworks, construction sites, etc. For right-angled and parallel drawing work. For marking work. * Please refrain from using it for any other ... Read More
    Right Angle Accuracy  0.1mm or less per 100mm  Thickness (mm)  Width (mm)  20  Surface Treatment  Silver  Material  stainless steel  Length Tolerance (mm)  ± 0.2 or less 
    Rating:
    90%
    from S$24.99
    Min. 2 days
  30. Small Curved Scale Flat Stainless 30 × 15cm
    Shinwa Rules Small Curved Scale Flat Stainless 30 × 15cm
    Added front and back same-eye type to popular small music scale. A small type that is useful for DIY. * Depending on the delivery location, the delivery date may be postponed and additional shipping charges may be incurred. * The driver will not assist in unloading. * Products with proofreading c... Read More
    Front Scale on Shorter Rule  (Outside) 15cm, (Inside) 5mm pitch 15cm  Back Scale on Shorter Rule  (Outside) 15cm, (Inside) 5mm pitch 15cm  Back Scale on Longer Rule  (Outside) 30cm, (Inside) 5mm pitch 30cm  Front Scale on Longer Rule  (Outside) 30cm, (Inside) 5mm pitch 30cm  Measurement Range (cm)  0~30  Thickness (mm)  1.1  Width (mm)  15  Shorter Rule (mm)  163  Longer Rule (mm)  330  Long Branch × Width × Thickness (mm)  330(165)×15×1.1  Trusco Part No.  432-6750  Mass (g)  57  RoHS directive (corresponding to 10 substances)  Correspondence  Dimension Tolerance (mm)  Overall length ± 0.2mm  Scale  Same on both sides  Shape  Same thickness  Material  Stainless steel  Squareness (/ 100mm)  ± 0.1mm or less  Length Tolerance (mm)  ±0.2 
    Rating:
    89%
    from S$6.99
    Min. 2 days
  31. Stainless Scale Smooth Scale
    SK (Niigata Seiki) Stainless Scale Smooth Scale
    Easy-to-read step scale. Rust-resistant stainless steel material. 150-1000 mm: Upper 1 mm scale, lower 0.5 mm scale. 1500, 2000mm: Upper 1mm scale, lower 1mm scale. For drawing, marking work, and dimensional measurement If the delivery destination is a private house (detached house / apartment ho... Read More
    Material  Stainless steel (SUS420J2) 
    Rating:
    73%
    from S$5.39
    Min. 2 days
  32. Circular Saw Guide Mobile
    Tajima (TJM DESIGN) Circular Saw Guide Mobile
    The light material magnesium is used for the first time. Because it is lightweight, it does not put a strain on your back even if you carry it all day. It fits easily in a tool bag and can be carried. Optimal length that can smoothly cut 5 inch materials, gable boards, studs, etc. Machining withi... Read More
    Effective Cutting Length (mm)  200 
    Rating:
    89%
    from S$32.99
    Min. 2 days
  33. Ruler Stopper
    Shinwa Rules Ruler Stopper
    By attaching it to a straightedge, you can easily and accurately perform tasks such as constant length, positioning, and depth measurement. It can also be used as a substitute for the depth gauge, which is convenient when processing metal, wood, etc. It can be attached to a JIS size straightedge.... Read More
    Material  Brass (matte nickel-plated)  RoHS directive (corresponding to 10 substances)  Correspondence 
    Rating:
    85%
    from S$9.69
    Min. 2 days
  34. Pickup Scale Silver cm Display Top and Bottom 1mm Pitch
    Shinwa Rules Pickup Scale Silver cm Display Top and Bottom 1mm Pitch
    The tip of the scale is bent, making it easy to pinch. Straightedge used to measure length * Depending on the delivery location, the delivery date may be postponed and additional shipping charges may be incurred. *The driver will not assist with unloading. *Do not use in places where there is a r... Read More
    Material  Stainless steel  Scale Interval  Top and bottom 1mm 
    Rating:
    93%
    from S$4.59
    Min. 2 days
  35. Pickup Scale
    TRUSCO Pickup Scale
    The shape is easy to pinch because the tip is bent. Comes with an inch conversion table. It is a JIS1 grade product. Draw, mark, and measure dimensions.
    Cell Spacing (mm)  (Lower) 1  Scale Interval, Top (mm)  1mm  JIS Standard Certification  Acquired  Material  Stainless steel (SUS420J2)  Specification  With inch conversion table 
    Rating:
    96%
    from S$4.99
    Min. 2 days
  36. Cutter Guide Slim
    Tajima (TJM DESIGN) Cutter Guide Slim
    18.5 mm height to protect hands from the cutter Ruler with guard The professional cutter guide is slimmed down to 40 mm in width and uses an aerial rib structure with excellent strength for office and home use. With a scale in millimeters. It can be used as a ruler. Anti-slip rubber is embedded i... Read More
    Rating:
    96%
    from S$11.99
    Min. 2 days
  37. Carpenter Square Mini
    SK (Niigata Seiki) Carpenter Square Mini
    It is a small but full-scale steel square. It fits in your pocket or pencil case and is convenient to carry. With a reverse scale (back side) that is convenient for depth measurement. With hook hole. Material: Stainless steel SUS420J2 If the delivery destination is a private house (detached house... Read More
    RoHS directive (corresponding to 10 substances)  Correspondence  Material  Stainless steel 420J2 
    Rating:
    93%
    from S$9.49
    Min. 2 days
  38. Carpenter Square Stainless Steel
    Shinwa Rules Carpenter Square Stainless Steel
    It is small, easy to use, and convenient to carry. The scale is engraved by etching so it will not disappear. It is also convenient for marking work and as a ruler. For various markings, marking work, right angle / length measurement. * Depending on the delivery location, the delivery date may be... Read More
    Right Angle Accuracy  0.1mm or less per 100mm  Measurement Range (cm)  0~10  Thickness (mm)  1.2  Width (mm)  10  Longer Rule (mm)  105  Long Branch × Width × Thickness (mm)  105(55)×10×1.2  Mass (g)  14  Shorter Rule (mm)  55  RoHS directive (corresponding to 10 substances)  Correspondence  Shape  Same thickness  Material  Stainless steel  Length Tolerance (mm)  ± 0.2 or less 
    Rating:
    93%
    from S$7.99
    Min. 2 days
  39. Curved Same Thickness Scale Silver 50cm Front and Back Same Masterpiece
    Shinwa Rules Curved Same Thickness Scale Silver 50cm Front and Back Same Masterpiece
    The scale is engraved by etching so it will not disappear. Adopted large and clear scale numbers. Both front and back have cm scale. All are JIS standard products. With allocation scale. The product number is included in the main body. The same thickness type is easy to mark. It is hardened to gi... Read More
    Front Scale on Shorter Rule  (Outside) 25cm, (inside) 20cm  Back Scale on Shorter Rule  (Outside) 25cm, (inside) 20cm  Back Scale on Longer Rule  (Outside) 50cm, (Inside) 40cm  Front Scale on Longer Rule  (Outside) 50cm, (inside) 45cm  Measurement Range (cm)  0~50  Thickness (mm)  1.4  Right Angle Accuracy  100mm does not exceed ± 0.1mm  Width (mm)  15  Shorter Rule (mm)  260  Longer Rule (mm)  520  Mass (g)  88  JIS Standard Certification  Acquired  RoHS directive (corresponding to 10 substances)  Correspondence  Dimension Tolerance (mm)  Overall length ± 0.2mm  Scale  Same on both sides  Shape  Same thickness  Material  Stainless steel 
    Rating:
    87%
    from S$35.99
    Min. 2 days
  40. Protractor No.19
    SK (Niigata Seiki) Protractor No.19
    The silver finish is made of stainless steel with hard chrome plating, making it easy to read the scale. Available in stainless steel and silver finishes. * We do not deliver to private homes (detached houses / apartments). * Products with proofreading cannot be canceled after ordering. * For pro... Read More
    Angle Measuring Range (°)  0~180  Minimum Reading (°)  Scale  1 ° through x 180 °  Thickness (mm)  1.2  Thickness of Rule (mm)  1.2  Length of Rule (mm)  204  Diameter, Main Unit (Φmm)  90  RoHS directive (corresponding to 10 substances)  Correspondence  Accuracy (min)  ±20 
    Rating:
    62%
    from S$16.99
    Min. 2 days
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