Measurement and control device for positive and negative rotation speeds of rotating machinery

The utility model relates to the technical field of rotating speed measuring and controlling instruments, and discloses a measuring and controlling device for positive and negative rotating speeds of rotating machinery, which comprises a measuring and controlling instrument body, a bottom plate and cooling fans, the measuring and controlling instrument body is mounted at the top of the bottom plate, and the cooling fans are slidably arranged on two sides of the bottom plate and clamped with the measuring and controlling instrument body. Four storage grooves which are symmetrically distributed are formed in the bottom of the bottom plate, supporting legs are rotationally arranged in the storage grooves, and a detachable moisture-proof box is installed at the bottom of the bottom plate and located among the four storage grooves. The moisture-proof box, the threaded pipe and the measurement and control instrument body are communicated with one another, moisture-proof agents in the moisture-proof box can convenie