The product has more excellent optical performance and can be connected with international standard interface. Magnification: ... diopter:±8D(10X),±10D(16X)Slit Width: 0mm-9mm adjustable(slit is round when the slit width is 9mm) Slit Height: 1mm-8mm adjustable ... Diameter(mm): Ø9,Ø8,Ø5,Ø3,Ø2,Ø1, Ø0.2 Slit Inclination: 5°,10°,15°,20°Filter:heat absorption,grey, redfree ...