The Original GYZJ-934-1, GYZJ-935 and GYZJ-936 Hand-held portable hardness testers. Official Barcol Impressor® scale, for testing of Aluminum Alloys, Soft Metals, Plastics, Fiberglass Sheets, Tanks, Surfaces, Fire Department Ladders, Composite Materials, Rubber of Leather, Laminates, Lead. Made in the USA.
For soft metals such as aluminum and its alloys, brass, copper, and some of the harder plastics and fiberglass. Approximate range 25 to 150 Brinnell (10 mm ball 500 kg load).
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.
Simply exert a light pressure against the instrument to drive the spring-loaded indenter point into the material...
Follow the step by step calibration procedure for the Barcol Impressor®. Use the included tool to begin the procedure...
See the typical readings of aluminum alloys and review the approximate conversion curves for the Barcol Impressor® models...
The Barcol Impressor® is a convenient tool for testing the hardness of aluminum, aluminum 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.
Can be used in any position and in any space that will allow for the operator's hand. The hardness reading is instantly indicated on the dial (displays 100 graduations). No waiting, pre-loading or separate measurements.
The Impressor weighs only 1 lb. 2 oz. The entire Impressor package comes complete with carrying case, adjusting wrench, one GYZJ-250 (87/89) standard test disk and one GYZJ-78 (43-48) standard test disk and two spare indenter points. Shipping weights = 4 pounds, box = 13 x 13 x 7 inches.
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.
