Dead Weight Piston Gauge for Pressures to 26 Kilobars

The design and operation of a dead weight piston gauge for pressures to 26 kilobars is described. The gauge is of the controlled clearance type. The diameter of the gauge piston is 0.2 cm. It is loaded directly with up to 840 kg of weights. A volume of about 1 cm3 is provided inside the gauge for the material under test. The use of this gauge for transition pressure determinations is briefly discussed.