JD3 Projection vertical optical length measuring instrumentDetailed product description：

1、 Product Name: Projection Vertical Optical Meter

2、 Model: JD3

3、 Characteristics:
The projection vertical optical meter is a precision optical mechanical end measurement instrument. It is one of the commonly used precision instruments in factory metrology rooms, workshop calibration stations, or manufacturing measuring tools, tools, and precision workshops to measure the micro difference dimensions of part shapes by comparing standard measuring blocks with the measured parts.
It can calibrate measuring blocks and high-precision cylindrical gauges, and can make comparative measurements of the diameter of cylindrical, spherical and other workpieces, the thickness of sample workpieces, and the pitch diameter of external threads.

4、 Specification parameters:
1. Measurement range (mm): 0-180mm
2. Main specifications of projection optics mirror tube
Dividing value of the dividing board: 0.001mm
Dividing range of the dividing board: ± 0.1mm
Measurement force (N) 2 ± 0.2N
Zero adjustment range of 20 grids
Free lifting distance of measuring rod: 0.5mm
Projection optical meter mirror tube outer diameter matching size φ 28h6
The outer diameter dimension of the measuring rod and the measuring cap fitting is φ 6g6
3. Indication error of optical tube (μ m):
Within the range of ± 60 μ m, it is ± 0.20 μ m
Within the range of ± 0.25 μ m beyond 60 μ m
4. The stability of the instrument's indication is 0.1 μ m
5. Dimensions of the instrument (mm) 340 × 160 × 750
6. Instrument weight (kg) 21

5、 Instrument Introduction:
1. Circular flat workbench
2. Circular ribbed workbench
3. Square ribbed workbench
4. Small three o'clock workbench
5. Auxiliary Workbench
6. 2 plane measuring cap
7. φ 8 flat measuring cap
8. Diameter 14 flat measuring cap
9. R20 spherical measuring cap
10. 1.5x8 and 1x2 blade shaped measuring caps