Mitutoyo® 176-821A - Series 176 Toolmaker's 20-200x Black/White Microscope

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Product Details

Series 176 Toolmaker's 20-200x Black/White Microscope (176-821A) by Mitutoyo®. With Digimatic Mic Heads. TM-505 Toolmaker's Microscope, 30X Magnification, 2 In X 2 In Stage Travel. 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.


Magnification: 20-200x
Series No.: TM - 510
Mech / Digi: Digital
Resorgrad. IN: Variable
Resorgrad. mm: Variable mm
Accuracy IN: Special
Output: Y
Cable 40: 937387
Cable 80: 965013
Model No: TM - A1005B
Objective Lens Diameter: Standard accessory: 2x,Options: 5x, 10x
Mic Head.Max. Workpiece Height: 4.21" 107 mm
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 2" 100 x 50 mm
Table Top Size: 9.44 x 6" / 240 x 152 mm
Usable area of stage glass: 6 x 3.8" 154 x 96 mm
Linear measurement method: Mic Heads Included
Resolution: 005" / 1µm
Micrometer head travel range: 2" / 50 mm
Color: Black/White


  • Both transmitted and reflected illumination intensity can be adjusted to obtain optimal illumination intensity for the work piece
  • Angle measurement is performed easily by turning the protractor to align the cross-hair reticle with the work piece image
  • 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 lb (14 kg) TM-1005B: Approx. 33 lb (15 kg)

The world's largest metrology company Mitutoyo® was founded in 1934 by Yehan Numata with one product - the micrometer. Mitutoyo's philosophy at that time was to make the best mechanical micrometer in the world. But also to produce them in quantities that made them affordable and available to all of manufacturing so they could improve the quality of the products they manufactured. This philosophy was expanded in the next several decades to include a wider product offering focused on mechanical, dimensional gaging products. Mitutoyo focused its R&D and production efforts on creating the most advanced micrometers, calipers, indicators and other measurement tools in the world.

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Mitutoyo® 176-821A - Series 176 Toolmaker's 20-200x Black/White Microscope

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