الوصف

JD3
Vertical Projection Optimeter
PURPOSE
The Projection Optimeter is a high precision length-measuring instrument by comparing measures. It is extensively used to measure grade four and five of standard gauge block (JD*0 may measure grade three and four of standard gauge block) and precision parts (as steel ball, roller column, precision parts of ladder shaped etc. ) for external dimensions.

Features:

The instrument can drive *-grade block gauges.
It can be used for the verification of high-precision plain plug gauges, thread plug gauges and precision sphere diameters.
It is equipped with various worktables, convenient for replacement, in accordance with parts of different shapes.

Technical parameters:
Range of measurement: ****0mm
Worktable
Circular plane worktable (D): φ *8mm
Circular grooved worktable (D) φ *8mm
Square grooved worktable (mm) **2× **0mm
Small three-ball worktable: Used for the verification of thin black gauges small three-ball worktable: Parallel tolerance is 0.***5mm
Instrument precision index
Indication error
Within *0μ M range: ± 0.*0μ M
Over *0μ M range: ± 0.*5μ M
Indication stability: 0.1μ M
Projection optimeter tube
Graduation value of dividing plate: 0.**1mm
Graduation range of dividing plate: ± 0.1mm
Measurement force: 2N± 0.2N
Free elevating distance of measuring lever: 0.5mm
Fit outside diameter of projection optimeter tube: φ *8h6
Fit outside diameter of measuring lever and measuring cap: φ 6g6
Ambient environment of the instrument service
Room temperature: *0 centigrade± 3 centigrade
Relative humidity: Not more than *0%