Mitutoyo Toolmaker's Microscope Model TM-A1005B - 176-821A


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Mitutoyo Toolmaker's Microscope Model TM-A1005B

The Mitutoyo TM Series is a toolmakers’ microscope well suited for measuring dimensions and angles of machined metals. It also can be used to check the shape of screws and gears by attaching an optional reticle. The compact body makes it ideal for use on shop floors with limited space.


  • Angle measurement is performed easily by turning the angle scale disc to align the cross-hair reticle with the workpiece image.
  • Illumination intensity can be adjusted.
  • Included standard accessories create an overall magnification of 30X. Magnifications can be changed from 20 - 200X by using optional objectives and/or eyepieces.

Technical Data:

Optical tube Monocular with 30º depression angle
90º broken cross-hair reticle (176-126)
Erect image
Diopter adjustable
Eyepiece protractor Graduation: 1º
Protractor range: 360º
Minimum reading by vernier: 6’
Eyepiece (176-116) Magnification: 15X
Field number: 13
Objective (176-138) Magnification: 2X
Working distance: 2.638" (67mm)
Numerical aperture: 0.07
Total magnification 30X
Transmitted illumination 3W LED
GIF (green) filter
Stepless intensity adjustment
Reflected illumination 3W LED
Stepless intensity adjustment
Adjustable position
Power supply 120 V AC, 50/60Hz
Power consumption 100VA
Mass TM-505B: Approx. 30.8 lbs. (14kg)
TM-1005B: Approx. 33 lbs. (15kg)


Model No TM-A1005B
Order No 176-821A
Objective Lens Standard accessory:2x,Options: 5x, 10x
Mic Head.Max. Workpiece Height 4.21in 107mm
Transmitted illumination Stepless brightness adjustment, White LED light source, With green filter
Surface illumination Oblique single-source type, Stepless brightness adjustment, White LED light source
Cross travel measuring range 4 x 2in 100 x 50mm
Table top size 9.44x6in 240x 152mm
Usable area of stage glass 6x3.8in 154x96mm
Linear measurement method Mic Heads Included
Resolution .00005"/1µm
Micrometer head travel range 2"/50mm

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Mitutoyo Toolmaker's Microscope Model TM-A1005B