Flat wave meter (for calibrating flat plates)

Biological microscope calibration and verification device (multiplier)

High precision pneumatic instrument calibration device

Special 45 degree angle ruler for zero position error calibration of level ruler

Outer diameter micrometer parallelism error gauge (steel ball gauge)

Contour meter, cylindricity meter, roundness meter, standard glass hemisphere

Tower ruler (leveling staff) calibration special sample ruler

Jumping inspection instrument standard core shaft, eccentric shaft

Ultrasonic thickness gauge standard thickness block calibration special standard circular tube

Level zero position calibrator (for metrological standard building)

Special thermocouple temperature probe for rapid hydrogen measurement of aluminum melt

Standard glass line ruler for calibrating biological microscopes