Is Smart Device:NoFeatures:High Definition,portable,handheld,digitalTheory:Biological MicroscopeMaterial:Optical GlassDrawtube:Binocular Monocular TrinocularMagnification Ratio:500x & UnderOrigin:Mainland Certification:NoneQuality Standard:Eu Usa Top And Oem:YesPackage:Packed In Safety Export Plastic Box With SpongeApplication:Widely Used In Microscope FieldModel :Fhcw09.907 Cross Line ReticleMicrometer Diameter:16mm 19mm 20mm 20.4mm 24mm 25mm1 Division:0.1 X 0.1mmMeasuring Range:X = 0.1mm X 100 = 10mm Y = 0.1mm X 100 = 10mm