Deep Wash Screen Assembly, Corps of Engineers

Used to wash out fines from samples of base coarse materials. The unit capacity is 10 to 12 lb (4.5 to 5.4 kg) and includes a 12 in diameter x 10 in (30.5 x 25.4 cm) deep brass frame with a No. 200 mesh replaceable screen with a coarser mesh backing, and an overload screen at the mid point of the sieve depth.

Meets BS 410.