White Color Digital Hardness Tester / Durometer Adjustable Light Source

White Color Digital Hardness Tester / Durometer Adjustable Light Source Instrument installation Punch on the the prepared workbench Remove the outer box,take out Hardness tester mainframe and accessories box; Take out the level adjustment screw from the accessory box,spin at the bottom of the main body； Remove the cover,rotate the shockproof fastening screws(As shown in Figure 4)； Turn the test force change handwheel to 0.098N； Rotate the screws on the cover of the weight