Kismet 'Special' Giant Model. Chrome plated brass 'pencil' type gauge. When applied to the tyre valve pressure is indicated on a telescopic barrel. This example reads from 10 to 120 lbs./square inch and was probably used for RAF station vehicles rather than aircraft tyres. Approximately 13cm in length (18.5cm fully extended). Clear Air Ministry and King's crown engraving. Wear to plating otherwise good used condition. Stock code M20423.