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The Demket Tappet Master provides an easy way of adjusting overhead-valve tappets. It consists essentially of T-handled screwdriver located in the centre of socket-drive T-bar. The socket drive fits all standard 0.5in. square drive socket heads.
The two T bars are close together so that the locking nut and the adjuster screw can be turned using one hand leaving the other to operate the feeler gauge.
Made by: The Demket Co, Gloucester Trading Estate. Hucclecote. Gloucester.