Microscope measuring MPB-3

Appointment: the otschetny measuring microscope of MPB-3 is intended for measurement of the print (hole) formed on a surface of various metals. at determination of hardness by Brinell's method.

Description: The principle of work of a measuring microscope of MPB-3 is based on determination of the size of the image of the print received from cave-in of a ball in the studied material under a certain loading on a grid scale.

Technical characteristics:
	lens 4x	lens 2x
The maximum diameter of the measured print, mm	3,5	7,0
Price of division, mm	0,02 ±0,0025	0,04 ±0,005
Field of vision, mm, not less	4,5	9,0
Increase, krat	50±2,5	25±1,2
Limit of an admissible absolyutnoypogreshnost, mm:
on the range of measurements 0-1,5 (on any interval)	±0,006
on the range of measurements 0-3,0 (on any interval)	±0,012
on the range of measurements 0-3,5	±0,02
on the range of measurements 0-2,0 (on any interval)		±0,01
on the range of measurements 0-7,0		±0,02
Limits of installation of an eyepiece, dptr	±4	±4
Dead course of an adjusting ring, mm, no more	1,2	1,2
Lateral shift of an aiming point, mm, no more	0,04	0,04
Overall dimensions, mm, no more than height (in the extreme lower provision of a microscope)	203	203
diameter	53	53
Mass of a microscope, kg, no more	0,300	0,300
The mass of a microscope with accessories, kg, no more	2,0	2,0

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