The Impressor is a convenient tool for testing the hardness of aluminium, aluminium
alloys, copper, brass and other materials including plastics and fiberglass. The instrument is designed
for use on fabricated parts and assemblies as well as on raw stock. Barcol Impressor 934-1 for soft metals
such as aluminium and its alloys, brass, copper, and some of the harder plastics and fiberglass.
Approximate range 25 to 150 Brinell (10 mm ball 500 kg load). This unit meets American Society for Testing
and Materials (ASTM) Standard D2583. Barcol Impressor 934-1-0-1 a variation of the 934-1 that has a "flat
bottom" shaped support leg. This is used to sit on top of the crest of the round rung of a ladder such as
a fire department ladder. Approved by the NFPA, National Fire Protection Agency. Model 934-1 is useful for
material having hardness of 25-150 Brinell Hardness Barcol Impressor Hardness Tester STANDARDS: AS 3894.4,
ASTM B 648, ASTM D 2583 Model 934-1: for soft metals such as aluminium and its alloys,brass, copper, and
some of the harder plastics and fibreglass. This unit meets ASTM Standard D2583.
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