Standard: BS 812:105.1
Used to determine if aggregate is flaky; i.e. if thickness is less than 0.6 of nominal size.
Manufactured from heavy steel sheet, they have dimensions as specified by Standards and are available in the following size openings:
Slot width Slot length
4,9 mm 30 mm
7,2 mm 40 mm
10,2 mm 50 mm
14,4 mm 60 mm
19,7 mm 80 mm
26,3 mm 90 mm
33,9 mm 100 mm
Weight: 15 kg approx.