CIRCUIT PRESSURE DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a circuit pressure display device which can be simply designed while reducing the outer shape dimension with a shape directly mountable on a circuit or test object device. SOLUTION: The circuit pressure display device in a specific environment to a gas spring circuit and a press tool exposed to a severe environment such as impact, chip and oil comprises a main body 2 in which a piston 3 is mounted to be exposed to the pressure of a test object circuit. The piston 3 is deeply fitted with air-tightness into a pressure chamber 6 formed within the main body 2 and intended to connect with the test object circuit. The piston 3 can occupy two visualization position corresponding to a pressure level of the test object circuit larger than the force of a calibration spring 5 applied thereon and a pressure level smaller than the force of the calibration spring. COPYRIGHT: (C)2008,JPO&INPIT