The image on the projection screen should be a positive one; which would be in conformity with the measuring custom
The transmission illumination with two high-and-low shifts is adopted to fit in with the measurement demand of different workpieces
With a non-spherical collector lighting system, the visual field of the projector screen would be all the more bright and homogeneous; thus reducing measurement errors and further securing the accuracy
Imported Phillips long-life halogen tungsten lamps are adopted to satisfy the requirement of long-time uses of the projector
With axial flow blower fans, the bilateral heat radiation can provide super-strong radiating power
JT12A-A has a built-in feeder box, RS232 interface and 2-coordinate measuring software with strong function
JT12A-B has a DS-401SM multi-function digital indicator and micro-printer

This instrument is a precession measuring device integrating optics, mechanics, electricity and computation into an organic whole; which is widely used in the measuring rooms and workshops of related factories and plants in the sectors of machinery manufacture, instrumentation, clocks and watches and electronics industries. This instrument can easily and speedily check the profiles and surface shapes of various measured parts; e.g., various parts, cutting tools and tools of sample plates, punching pieces, cams, gears, molding milling cutters, tapping tools, etc.

Projection screen
Screen diameter:  φ300 mm
Rotation range:  0°~ 360°
Resolution of the rotary angle:  1′
Accuracy of the rotary angle:  6′
Worktable
Worktable area:  340mm×152mm
Range of X-coordinate:  0~150 (mm)          Resolution :  0.001 (mm)
Range of Y-coordinate:  0~50   (mm)          Resolution :  0.001 (mm)
Range of Z-coordinate (Focusing):  0~80 (mm)  (Focusing)
Accuracy of the instrument:  (4+L/25)μm, of which, L = length of the workpiece measured ( unit: mm)
Load capacity of the worktable:  4kg
Lighting source
Transmission lighting:  12V/100W Halogen tungsten lamp
Indirect lighting:  24V/150W Halogen tungsten lamp
Objective:

Errors of magnifying power:  0.08%
Ambient environment of the instrument service:
Room temperature:  20?±5?
Relative humidity:  Not more than 60%
Overall sizes of the instrument (mm):   480×780×1150
Mainframe weight:  135 kg
Remarks on the Power Source: 
Rated voltage for the instrument is 220V/110V
Frequency: 50HZ/60HZ
Rated power: 440W