The Barcol Impressor meets the following ASTM (American Society for Testing and Materials) standards: E140-97; D2583-75; B648-78: E140-97 Standard Hardness Conversion Tables for Metals; D2583-75 Standard Method of Testing for Indentation Hardness of Plastics by means of a Barcol Impressor; B648-78 Standard Method of Testing for Indentation Harness of Aluminum Alloys by means of a Barcol Impressor.
Fire Department version: The Barcol Impressor meets the following NFPA (National Fire Protection Association) standards: NFPA 1931 Design of and Design Verification Tests for Fire Department Ground Ladders; NFPA 1932 Use, Maintenance, and Service Testing of Fire Department Ground Ladders.

The original Barcol Impressor was invented by Walter Colman (who founded Barber-Colman) to assist the US Army Air Corps in avoiding sabotage in WW II. Fifty years later, the same Barcol product has been used to perform hardness testing on repairs to the USA Space Shuttle.

Barcol-Impressor.com -- 3415 Precision Drive -- Rockford, Illinois 61109 USA
Telephone +1.815.874.2000 -- Fax: +1.815.874.2211 -- e-mail: orders@instrucon.com
Barcol-Impressor.com is a completely stocked support office for many Barber-Colman products,
with over 135 employee-years of hands on, factory trained, direct Barber-Colman experience.
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Barcol Impressor® is a Registered Trademark of InstruCon, Inc.