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Inch Dial Indicator

AGD Size 2 Model Equivalents

This page is designed to help you find equivalents to metric dial indicators which you might own or want to replace. It will show the new models when others have become obsolete. It can also help you find better quality equivalents or—vice versa—cheaper alternatives.

We've taken the major parameters into account: the range, the graduations, the dial diameter and the stem diameter.

We've divided the models into groups of those with 8 mm diameter stems, and those with 3/8" diameter stems. Some indicators ship with a lug back, others have flat backs and lug backs need to be ordered separately. There will of course be some variation from one manufacturer to another. For a detailed comparison of manufacturers and brand names, refer to page 14.

Where they're made (current models):

  • Brown & Sharpe (B&S): Germany or Switzerland
  • Dorsey: USA
  • Federal: USA
  • Gem: Japan
  • Fowler: China
  • MarCator (Mahr): Germany (made by Kafer)
  • Mahr-Federal: USA (green dials) or Germany (while dials)
  • Mercer: Switzerland
  • Mitutoyo: Japan
  • Standard: China (unless otherwise noted) Models made in USA are obsolete.
  • Starrett: USA
  • Teclock: Japan

By clicking on a linked model number or brand name, you will be brought to a page with more detailed information. This listing does not pretend to be comprehensive. We have only included brand name gages which are generally available in the U.S. Omissions will gladly be added.

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Essential dimensions of Group 2 dial indicators.

Graduations Range Dial Back Stem Ø Manufacturer Model No. Notes
.001" .5" 0-50-0 lug back 3/8" Starrett 25-341/5J
.001" 1" 0-50-0 lug back 3/8" Starrett 25-341J $$$
.001" 1" 0-50-0 lug back 3/8" Teclock AI-922
.001" 1" 0-50-100 flat back 3/8" Dorsey D2M1000-10
.001" 1" 0-50-100 lug back 3/8" Brown & Sharpe MW216
.001" 1" 0-50-100 lug back 3/8" Brown & Sharpe MB216 black dial
.001" 1" 0-50-100 lug back 3/8" Mahr-Federal 28ISN
.001" 1" 0-50-100 lug back 3/8" Fowler 52-520-110 bi-directional [$]
.001" 1" 0-50-100 lug back 3/8" Mitutoyo 2416S-10 [$$]
.001" 1" 0-50-100 flat back 3/8" Standard 01424010
.001" 1" 0-50-100 flat back 3/8" Standard 01424011 black dial
.001" 1" 0-50-100 lug back 3/8" Teclock AI-921 [$$]
.001" 1" 0-50-100 lug back 3/8" Teclock AI-921B black dial [$$]
.001" 1" 0-50-100 lug back 3/8" Starrett 25-441J [$$$]
.001" 1" 0-50-100 lug back 3/8" Mitutoyo 2904S reverse reading [$$]
.0005" .5" 0-25-50 flat back 8 mm MarCator 810 AZ = 4311900
.0005" 1" 0-25-50 lug back 3/8" Mitutoyo 2776S bi-directional [$$]
.0005" 1" 0-25-50 lug back 3/8" Starrett 25-631J [$$$]
.0005" 1" 0-50-100 flat back 3/8" Standard 01424012
.00025" .05" 0-5-0 lug back 3/8" Mahr-Federal C2Q (22Q) = 2015782
.00025" .05" 0-10-0 lug back 3/8" Starrett 25-128
.00025" .05" 0-10-0 lug back 3/8" Mahr-Federal C3K (23K) = 2015783
.0001" .025" 0-5-0 lug back 3/8" Mahr-Federal C2I (22I) = 2015781 [$$$$]
.0001" .025" 0-5-0 lug back 3/8" Mitutoyo 2803S-10 [$$]
.0001" .025" 0-5-10 lug back 3/8" Mitutoyo 2802S-10 [$$]
.0001" .025" 0-5-10 lug back 3/8" Mitutoyo 2802S-70 water-proof [$$$]
.0001" .05" 0-5-0 lug back 3/8" Mitutoyo 2923S-10 [$$]
.0001" .05" 0-10 lug back 3/8" Mitutoyo 2904S-10 [$$]
.0001" .2" 0-5-0 lug back 3/8" Starrett 25-511J [$$$$]
.0001" .2" 0-5-10 lug back 3/8" Starrett 25-611J [$$$$]
.0001" .2" 0-5-0 lug back 3/8" Brown & Sharpe MW240 01482010 [$$$]
.0001" .2" 0-5-0 lug back 3/8" Brown & Sharpe MB240 01482011

Notes

  • most indicators are available with flat or lug backs. We have not included all the options in this list. If an indicator is listed with a flat back, it just means that you'll have to order a lug back separately. The opposite applies to indicators with flat backs. Whenever you buy a new indicator, always specify what kind of back you'd like. Usually there's little or no difference in price between the two.

  • there is some variation in the bezel diameter among manufacturers but they're approximately 2-1/4 inches. That's why they're grouped under the "Size 2" category.

  • it's possible to turn an 8 mm stem into a 3/8" stem by using an adapter sleeve. This will not work in the reverse direction. There's no way a 3/8" stem will fit into an 8 mm hole.


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