BS 812

Length Gauge measures the elongation index of aggregates for classification.
The particle is elongated when its length (longest dimension) is more than 1.8 o the midsize of the sieve fraction. The aggregate to be classified is separated into six sieve fractions from 6.3 to 50 mm and each fraction is examined separately.

Precisely located stainless steel pins for accurate measurements,

Laser-etched markings clearly show sizes,
Approx. Weight: 1 kg