Consisting of a two blocks of wood clamped together with a pulley In the centre. The pulley is fitted to shaft moving on the ball bearings. A lever bar is attached to one of the blocks carrying a weight hanger at the outer end. A spring balance is also fitted to measure the load factor developed with the tightening of the block with wing nuts and spring.
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Gautam Budh Nagar, Greater Noida, Uttar Pradesh