Contact opening distance measuring tool for outdoor pole-mounted vacuum circuit breaker

An outdoor pole-mounted vacuum circuit breaker contact opening distance measuring tool comprises a straight-strip-shaped handle, a U-shaped clamping fork and a middle connecting block, a fork opening of the U-shaped clamping fork faces forwards, the rear end of the U-shaped clamping fork is connected with the middle connecting block, the U-shaped clamping fork comprises a left fork wing and a right fork wing, and the vertical thickness of each fork wing is gradually increased from front to back; the handle is a telescopic handle and comprises an outer sleeve and an inner core rod, the rear section of the inner core rod can be sleeved with the outer sleeve in a longitudinal sliding mode, the front section of the inner core rod is exposed out of the front portion of the outer sleeve, the front end of the inner core rod is fixedly connected with the middle connecting block, a bolt hole is formed in the sleeve wall of the outer sleeve, and a packing bolt is screwed in the bolt hole. A spring for applying forward