PENETRATION PISTON - FOR CBR TEST - PLUNGER - IS 2720

The piston will be of mild steel chrome plated. It will be 50 ± 0.1 mm in dia, provided with dial clamp rod, weight of about 4kg. 20 cm long with arrangement of two holes for fixing dial clamping rod one at 2 cm and other at 7 cm from top level. Provided with one clamping screw. This willl be confirming to 4.4 of IS 9669-1980 (Fig.7)