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Proportional caliper

ASTM D4791
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General description
General description
Use for the rapid and easy determination of percentage of flat particles, elongated particles, or both in coarse aggregate fractions of 9.5mm (3/8 in) or larger.
It consists of 6" x 16" (152.4 x 406.4mm) base plate with four rubber feet, two fixed posts and a 13in (330mm) pivoting arm. The positioning of the pivoting arm allows to obtain desired ratio among 1:2, 1:3, 1:4, or 1:5.
Weight: 3.2 kg.
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Ordering info

47-D1656
Proportional caliper for aggregates to ASTM D4791

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