タイトルまたは説明

JD*1
Projection 2M Length Measuring Machine
PURPOSE
The Projection length measuring machine is a high precision optical instrument for measuring length. It can be used to determine the size of workpiece by means of direct and differential measurements. The chief uses of the machine are as follows:
. Differential measurements of the gauge block of 4th and 5th grade over **0 mm;
. Direct measurements of the calibration rods of the micrometer calipers, inside calipers micrometer and self-made measuring rods; Internal measurements of calipers gauge and bore diameter; Measurement of external thread pitch diameter. It can be used in inspection department of various factories and mines, scientific research institutes and the state metrological organizations.

The base of the instrumen
Ts, which is made of high quality cast iron, has enough strength and stability
Using measuring theory, real-time correct Abbe error.
Adopting a novel wax screen with magnifier as the projection reading screen, imaging clearly
The instrument has complete measuring accessories, it is easy to operate and its application is extensive

SPECIFICATION
Main accessories:
1. V-type support
2. Block support
3. Gauge support
4. Large measuring arms
5. Small measuring arms
6. Circle of measuring standard
7. Center cradle
8. Three-wire supports' group
9. Φ *4 flat contact tip
*0. Φ 2 small flat contact tip
*1. Φ 8 middle flat contact tip
*2. Spherical-end contact tip of RS*0
*3.1.5*8 knife-edge contact tip
*4. Pads group
*5. V-type iron
*6. Sticking temperature gauge
* Measuring range
Type JD9A JD*1 JD*0A
External measurement without center cradle (mm) *****0 *****0 *****0
Internal measurement With measuring hooks (depth ***0 mm) *3.****0 *3.*****0 *3.*****0
External thread pitch diameter measurement up
To M**0 To M**0 To M**0

* Instrument accuracy:
Minimum scale: 1 um
* Direct measurement of external dimension:
. **0.1mm Micron scale indication error 0.*5 μ M
. 0.****0mm Millimeter scale indication error (0.6+ L/**0)μ M
. *******0mm Decimeter scale indication error (0.5+L/**0) μ M
. Remark: L-Length measured in mm
* Fluctuation of instrument indication:
. External measurement 0.1μ M
. Internal measurement 0.5μ M
* Measuring pressure:
. External measurement **0± *0g
. Internal measurement ******0g
* Universal table:
. Transverse travel ***0 mm
. Vertical travel ***0 mm
. Longitudinal motion in level position: *0mm
. Rotary motion: >± 3° Tilting motion: >± 3
. Transverse micrometers scale unit 0.*1 mm
. Allowable load of the work table *0 Kg
* Maximum holding diameter of center cradle:
. Length ****0mm: Φ **0mm
. Length ******0: Φ **0mm
* V-type support:
. Height adjusting range: >*8m
. Maximum diameter of supporting workpiece to: *0mm
* Block gauge support, supporting length to: ***0mm
* Ball gauge support, supporting length to: ***0mm
* Wringing length of block cradle to: **0mm
* Range of V-type to: Φ *5
* Dimension:
. JD9A ***0X**0X**0mm
. JD*1 ***0X**0X**0mm
. JD*0A ***0X**0X**0mm