180 degree Detachable Stainless Round Head Rotary Protractor Ruler Measuring
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Product details of 180 degree Detachable Stainless Round Head Rotary Protractor Ruler Measuring
- Reasonable price
- Durable and practical
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Material: Stainless Steel
Angle: 0° – 180°
Size: As picture shown
Madeofstainless steel material, high precision, accuracy, durable.
Suitable for wood building, mapping, designing, etc.
For a simple measurement of the angle and length.
The reading of dials 0-180 degrees, foot long strip divided 15cm.
Laser engraving, clear reading.
Angle ruler combined screwing, the screws can be easily disassembled.
1. ZERO: loose screw and to turn handle ruler, then keep the handle ruler in the same level as the bottom of main plate. Start line must be on 0 position. The way you can revise the protractor whether it is accurate or not.
2. Measure Angle: loose screw, the subject put on the bottom of main plate handle ruler match to it, close the screw. After reading base line position on main plate.
3. Measure Width: 0-30 metric system on the bottom of main plate. Base line put on 90 position, the subject match to handle ruler, bottom of main plate.
4. Measure Depth: handle ruler put on the cave or match the subject.
5. Draw Line: loose screw, handle ruler adjust correct angle you would like, fix crew. Then you can draw lines on it.
Specifications of 180 degree Detachable Stainless Round Head Rotary Protractor Ruler Measuring
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