38 Plates Optometry Color Blindness Test Book Store Doctors only need to adjust

Doctors only need to adjust the ultrasound software to complete the probe replacement

use foam to protect the frame of swimming pools and bathtubs

Measurement and alarm range:  10 ~ 270 mmHg

allowing pressure changes to be observed both internally and externally for greater safety and securityAir compressorSize(L*W*H) 39*24*26 cm (16*10*11 inch)Air Flow 72Liter/minPower 480WVoltage 110VAC/220VAC±10%Weight 18KGSufficient power

Control B GN(gain)

38 Plates Optometry Color Blindness Test Book Store Doctors only need to adjustColor Blindness Test Book Description A professional test book, which is a simple and accurate method for discovering congenital color blindness and red green blindness, each in two forms, complete and incomplete. It includes four special plates for tests to determine the kind and degree of defect in color vision. Makes use of the peculiarity that in red green blindness, blue and yellow appear remarkably bright compared with red and green. Color