Gage Block Sets
Order by catalog number

Tell us if you require a Certificate of Calibration. This certificate provides individual readings on each block.
We need the customer name to place on the certificate.
We routinely provide a standard certification with all gage block shipments, which verifies traceability
to the U.S. National Institute of Standards and Technology (N.I.S.T.).

If you require etched serial numbers, we can provide this with a 6-digit maximum.

Individual Gage Blocks
Specify Shape, signified on the page by the following symbols:

Rectangle
Square
Heavy Duty
Specify Material (croblox® chromium carbide or steel)

Accuracy Grade (see next page)

Order by catalog number

Tell us if you require a Certificate of Calibration. This certificate provides individual readings on each block. We need the customer name to place on the certificate. We routinely provide a standard certification with all gage block shipments, which verifies traceability to the U.S. National Institute of Standards and Technology (N.I.S.T).

If you require etched serial numbers, we can provide this with a 6-digit maximum.

Other Block Lengths: .050", .100", .150", 1 mm and 2 mm sizes in the rectangular style are available in short length (1.180" or 30 mm) or long length (1.380" or 35 mm) which will match up with other blocks in a set. Specify the desired length.

The following table shows the recommended B89.1.9 replacements for the former GGG-G-15 grade tolerances

Former GGG-G-15C Grades
Suggested Replacements using B89.1.9 Grades
0.5
1
2
3
Grade 00 with Laboratory Calibration
Grade 00 (Webber AA)
Grade 0 (Webber A1)
Grade AS1 (Not available from Webber)
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