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RETENTION OF CHIN STRAP TEST APPARATUS
- Unit of Measure
Helmets shall consist of a rigid platform on which the appropriate head-form for the helmet under test can be fixed. A chin-piece corresponding to the body structure of the chin shall be fixed vertically below the head-form such that the chin-strap can be fastened over it. The other end of the chin-piece shall be connected to a spring balance through a chain.
- IS 2745 – 1983 : Specification for Non-metal Helmets for Firemen and Civil Defence Personnel
- IS 2925 – 1984 : Specification for Industrial Safety Helmets
- IS 9562 – 1980 : Specification for Non-metal Helmets for Police Force.