Impressor Hand-Held Portable Hardness Tester manufactured by
barcol impressor scale, for testing of:
Sheet, Tanks, Surfaces
The 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.
Easy to Use
experience required; 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, which is divided into one hundred graduations. No waiting, pre-loading
or separate measurements.
Impressor weighs only 1 lb. 2 oz. The entire Impressor package comes complete
with carrying case, adjusting wrench and two spare indenter points. The
Impressor + case = 2 lb. 8oz. Shipping weights = 4 pounds, box = 12 x 11 x 6
inches, dimensional weight 5 pounds. (1.8 kilograms, box = 21 x 28 x 16 cm,
dimension weight 2.5 Kilograms)
Four Models Available
934-1 for soft
metals such as aluminum 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. GYZJ 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. GYZJ
935 for the
softer plastics and very soft metals. GYZJ 936 for extremely soft
materials such as lead, linoleum and
The Impressor is best suited for testing homogeneous
materials. Materials of granular, fibrous or coarse structure will produce a
wide variation in hardness readings because of the small diameter of the
For accurate readings, material should be at least 1
/32"thick and large enough for a minimum distance of 1/8" in any direction from
the indenter point to the edge of the specimen. The testing area should be
smooth and free from mechanical damage.
Simply exert alight pressure
against the instrument to drive the spring-loaded indenter point into the
material. The indenter point must be perpendicular to the surface being tested.
On very soft metals, the highest reading should be used since cold flow permits
the spring loaded indenter point to continue penetration.
characteristics of very soft materials are such that uniform correlation between
different hardness measuring systems cannot be established. We recommend that
Impressor hardness limits for each material be established by