YX-10A Sapphire Crystal Orientation Device YX-10A sapphire crystal orientation device, specially used on sapphire blank crystal orientation de vice. Blank crystal of sapphire can processed into C surface or crystal bar of other crystal orientati on, and drilling crystal bar by machine tools. You must do exact orientation for blank crystal along C direction firstly, then drilling on machine tool until get your satisfied purpose. Device description 1 > Apply to heavy-weight, large-size sapphire blank crystal. 2> Measure all angle of sapphire crystal orientation , angular instrument is hang type, with digital angle display. 3^ Max diameter of measured crystal: 460mm. Max weight: 120kg. Orientation precision: ±30” sin gle reflection