38 Plates Optometry Color Blindness Test Book Store allowing pressure changes to be

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

Measurement and alarm range:  10 ~ 270 mmHg

so it is a must to Plug the adapter into the motor for normal use

ground mat x1

and three bacterial filtration treatments for the input air respectively

38 Plates Optometry Color Blindness Test Book Store allowing pressure changes to beColor 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