2. Alat a. Saringan satu set : 25,40 mm (1”), 19,10 mm (3/4”), 12,7 mm (1/2”), 9,52 mm (3/8”), 6,35 mm (1/4”), 4,76 mm (No.4), 2,38 mm (No.8),1,19 mm (No.16), 0,59 mm (No.30), 0,28 mm (No.50), 0,15 mm (No.100), 0,08 mm (No.200). 11