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IS : 2386 (Part-IV) 9377
For determining the aggregate impact value.
Specifications:
The instrument consists of a circular base with two vertical guides. The hammer of weight 13.75 ±0.25kg can be raised to fall freely down the vertical guides. The height of fall can be adjusted through 380± 5mm. The hammer is provided with a locking arrangement. The hammer falls freely to the base and is removable for emptying. Supplied complete with metal measure 75mm dia x 50mm high and tamping rod 230 mm long x 10mm dia.
With out blow counter
With blow Counter