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|1. (WO2018198717) DYNAMOMETER DEVICE|
A dynamometer device (1) comprises, at a distal end part of a dynamometer (3), a cover (5) that covers the periphery of a torque meter (14). The cover (5) has, on an end surface thereof, an opening (41) provided with a door (42), and a rotation shaft is locked by inserting a lock plate (52) through the opening (41). The lock plate (52) is slidably guided by a guide rail. A surface (51) to be locked that is formed along the tangential direction is provided to a portion of the outer peripheral surface of the rotation shaft, and the rotation shaft is locked when a locking surface (64) of the lock plate (52) engages with the surface to be locked.