Weight of plunger 300 6 0.5 g (0.661 lb 6 8 grains)
Diameter of larger end
of plunger
10 6 0.05 mm (0.394 6 0.002 in.)
Diameter of needle 1 6 0.05 mm (0.039 6 0.002 in.)
Inside diameter of ring
at bottom
70 6 3 mm (2.756 0.12 in.)
Inside diameter of ring
at top
60 6 3 mm (2.366 0.12 in.)
Height of ring 40 6 1 mm (1.57 6 0.04 in.)
Graduated scale The graduated scale, when compared with a
scale accurate to within 0.1 mm
at all points, shall not show
any point greater than 0.25 mm.