Big base 7-45x binocular zoom stereo microscope

EyepieceStandardAuxiliary Objective0.5XAuxiliary Objective1.5XAuxiliary Objective2XW.D.105mmW.D.177mmW.D.47mmW.D.26mmMag.FOV.Mag.FOV.Mag.FOV.Mag.FOV.10X/20mm7X28.6mm3.5X57.1mm10.5X19mm14X14.3mm45X4.4mm22.5X8.9mm67.5X3mm90X2.2mm15X/15mm10.5X21.1mm5.25X42.8mm15.75X14.3mm21X10.7mm67.5X3.3mm33.75X6.7mm101.25X2.2mm135X1.7mm20X/10mm14X14.3mm7X28.6mm21X9.5mm28X7.1mm90X2.2mm45X4.4mm135X1.5mm180X1.1mm25X/9mm17.5X12.9mm8.85X25.4mm26.2X8.6mm35X6.4mm112.5X2.0mm56.3X4.0mm168.8X1.3mm225X1.0mm30X/8mm21X11.4mm10.5X22.9mm31.5X7.6mm42X5.7mm135X1.8mm67.5X3.6mm202.5X1.2mm270X0.9mmMagnificationStandard:7X-45X,Chose Accessories:3.5X-270XEyepieceStandard:10X/20mm,Wild Field、High Eye-pointOptional Eyepiece10X/20mm,15X/15mm,20X/10mm,25X/9mm,30X/8mmHeadsInterpupillary: 54-76MM. Inclined 45 °. Rotatable 360°Hinged BinocularObjectivesS…