Protool carefully source and pick the best gauge block maker in the world. This is to provide assurance to our customer the best quality gauge block and competitive price. Gauge block quality can be maintain for 3 years in proper handling and storage without yearly calibration.



All gauge blocks are manufactured from special selected material and carefully machined to provide gauges of the highest quality.

  • Material Highly Alloyed Steel, Carbide And Ceramic.
  • Steel Hardness To Greater Than 63 RC
  • Come In Different Sets Quantity And Grade 1,0 And 00.
  • Sets Housed In A Quality Wooden Case.
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