7JA One meter length measuring instrumentDetailed product description：

Product Introduction
The one meter measuring machine 7JA belongs to the optical length measuring instrument, which can measure and transmit the internal and external dimensions of various workpieces using absolute measurement or comparative measurement methods In order to improve the accuracy and convenience of the instrument, photoelectric aiming, projection reading, and interference head positioning are used for inner hole measurement This instrument is suitable for measuring specific workpieces such as measuring blocks, measuring rods, steel balls, internal micrometers, cylinder diameters, cone taper angles, clamps, micrometers, ring gauges, thread diameters, etc. in various factories, mines, enterprises, national appraisal institutions at all levels, metrology departments and laboratories of higher education institutions.

Technical specifications of one meter measuring machine 7JA:

type	7JA
measurement range	external dimensions	0-1000 millimeters
	inner dimensions	1-900 millimeters
Minimum division value	0.001 millimeters
measurement accuracy	External testing: within 0.1mm	0.25 microns
		Within 100mm (0.6+L/200) microns
		Within 1000mm (0.5+9L/1000) microns
	Internal testing: using an interference head	0.5 microns
		Use large and small internal measuring hooks (2+L/100) to measure micrometers (L - length of workpiece, in millimeters)
Electric aiming accuracy	0.00005 millimeters
Measurement range of thermometer	15-35℃
Minimum division value	0.2℃
Workbench lifting range	80 millimeters
Lateral movement range	40mm
countertop dimensions	160 * 200mm
maximum load	20 kilograms
Measuring shaft outer diameter with matching ruler	φ28d
Measuring rod outer diameter matching size	φ6gb
Working voltage of electrical box	220 volts
Instrument dimensions	1950 * 585 * 300 millimeters

7JA one meter length measuring machine