201-17 Introduction of fisher sub sieve sizer U-shaped manometer
The fisher sub sieve sizer is composed of many parts. The U-shaped manometer is a main part. This part is made of glass, inside is empty, U-shaped. The hollow holds water, the water level moves up and down. The main function of U-shaped manometer is to sense and show the action degree of pressure, and then indicate the measurement result of fisher sub sieve sizer.