X-Y Mechanical Stage (Square Glass) - KMA500 Size:180x155x26 mmTravel distance : 75 x 55 mmColor Filters -KMA501 32mm Blue Green and Yellow Filters for MicroscopesDimension: 32mm (1-1/4″) in diameter approximately.Crosshair Eyepiece - KMA502 10X Magnification Power Eyepiece20 mm Super Wide Field of ViewGraduated in 0.01mmOverall Reticle 1mm30 mm Mounting Size Camera Adaptor High Resolution - KMA503 0.5X focus-adjustable Camera AdaptorMounting Size on Camera Side: 1″ (25.4mm) in diameterMounting Size on Microscope Side: 1-1/8″ (28mm) in diameter Camera Adaptor for Trinocular - KMA504 Mounting Size on Camera Side: 1″ (25.4mm) in diameterMounting Size on Microscope Side: 1-1/8″ (28mm) in diameterTWO times Working Distance.Double times Field of ViewCutting Magnification Power by 0.5X1-1/8″ (28mm*0.75) bottom Mounting Thread