1,Microscope observation instument,Sliding Binocular Head, at 45 Rotatable 2,Objective: Achromatic DIN 4X,10X,40X(S),100X T-25 Microscope observation instumentUsesMonocular oblique cylinder compact series ... in low position.9. Condenser:ABBE condenser N.A=1.25 with iris diaphragm,Kolher illumination is optional. T-25 Microscope observation instument