Vevor micro inlaid mirror multi-directional microscope with spring bracket multi-directional micro-setting microscope microscope gem diamond setting machine with stand jewelry tools 7x-45xuser-friendly operating systemmicroscope headhigh-quality flexible springpremium aluminum alloyflexible stand & sturdy basewide applicationbracket hole: 85mm 3.35'',Main straight: 270 ,material: hard aluminum alloy,continuous zoom: 0.7X-4.5X,product size: 68.58 Cm x 53.34 Cm l x h 27'' x 21'',machine objective lens: 0. X 165 mm,total magnifation :7x-45x,control high range: 60mm 2.36'',Long working distance: 95mm-300mm 3.7''-11.8'',Machine eyepiece: wf10x 20 mm,binocular pupil distance: pupil distance adjustment 54-76 mm 2.13-2.99 Inch ,model: jewelry microscope stand,field of view: 5.1-33 Mm 0.2-1.3 Inch ,straight: 15