Metrology Solutions

HJM Precision Inc. represents, distributes and supplies measurement and quality related products from a full line of major manufacturers.

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Visual Precision
  • Optical Comparator replacement charts
  • Glass, Vinyl or Mylar Overlays
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No. 1
Combination Radius & Grid Chart
 

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No. 2
Grid Chart
 

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No. 15
Glass Protractor Rim Chart
Glass protractor rim chart marked every 5 degrees graduated every 30 minutes "0" to 360 degrees shown. Available in all diameters up to and including 30.75" diameter.
 

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No. 29
American National Basic
Thread Form

For checking thread angles, root and crest-forms and depth, from 4 to 80 pitch thread, as defined in the Federal Standard Handbook H-28
 
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