Standard Glass Scale
STANDARD GLASS SCALE
Introduction of the Standard glass scale
Standard glass scale is just like a kind of very precise ruler, and on its surface, accurate divisions are equally marked. You may measure the length by counting its divisions. The scale is frequently used, and even built-in precise instruments, machining tools as length measuring standard scale. Also, it is often used for scale calibration, as well as traceability of measurement standards.
Material: Sodium Glass
Coefficient of thermal expansion: α（0〜300oC）=8.5.10-6K-1
Specifications of Standard glass scale
So with pitch = 0.1 mm, we have a table of specifications corresponding to scale (mm), line width (mm) , and accuracy (mm) at a temperature of 23oC as follows:
Scale : 50mm 500div (mm)
- L1 – L2 – L3 = 80 – 20 – 5
- Accuracy : +/- 0.001 mm
- Line Width : 0.005 mm
Scale : 50mm 500div (mm)
- L1 – L2 – L3 = 80 – 20 – 5
- Accuracy : +/- 0.001 mm
- Line Width : 0.020 mm
Scale : 100mm 1000div (mm)
- L1 – L2 – L3 = 120 – 20 – 5
- Accuracy : +/- 0.002 mm
- Line Width : 0.005 mm
Scale : 100mm 1000div (mm)
- L1 – L2 – L3 = 120 – 20 – 5
- Accuracy : +/- 0.002 mm
- Line Width : 0.020 mm
Scale : 150mm 1500div (mm)
- L1 – L2 – L3 = 180 – 20 – 5
- Accuracy : +/- 0.002 mm
- Line Width : 0.005 mm
Scale : 150mm 1500div (mm)
- L1 – L2 – L3 = 180 – 20 – 5
- Accuracy : +/- 0.002 mm
- Line Width : 0.020 mm
Scale : 200mm 2000div (mm)
- L1 – L2 – L3 = 240 – 20 – 5
- Accuracy : +/- 0.002 mm
- Line Width : 0.005 mm
Scale : 200mm 2000div (mm)
- L1 – L2 – L3 = 240 – 20 – 5
- Accuracy : +/- 0.002 mm
- Line Width : 0.020 mm
Scale : 300mm 3000div (mm)
- L1 – L2 – L3 = 340 – 30 – 5
- Accuracy : +/- 0.003 mm
- Line Width : 0.005 mm
Scale : 300mm 3000div (mm)
- L1 – L2 – L3 = 340 – 30 – 5
- Accuracy : +/- 0.003 mm
- Line Width : 0.02 mm
Scale : 400mm 4000div (mm)
- L1 – L2 – L3 = 440 – 30 – 5
- Accuracy : +/- 0.003 mm
- Line Width : 0.03 mm
Scale : 500mm 5000div (mm)
- L1 – L2 – L3 = 540 – 30 – 5
- Accuracy : +/- 0.003 mm
- Line Width : 0.03 mm
Scale : 600mm 6000div (mm)
- L1 – L2 – L3 = 640 – 30 – 5
- Accuracy : +/- 0.004 mm
- Line Width : 0.03 mm
Scale : 700mm 7000div (mm)
- L1 – L2 – L3 = 740 – 30 – 5
- Accuracy : +/- 0.004 mm
- Line Width : 0.03 mm
Scale : 800mm 8000div (mm
- L1 – L2 – L3 = 840 – 30 – 5
- Accuracy : +/- 0.005 mm
- Line Width : 0.03 mm
Scale : 1000mm 1000div (mm)
- L1 – L2 – L3 = 1040 – 30 – 5
- Accuracy : +/- 0.005 mm
- Line Width : 0.03 mm
