For use with BESTO Student Junior and Medical Microscopes. There is a ring provided in the high power objectives by moving these ring up or down, you can increase the length of 40 X (SL) and 100 X (SL) objectives, thus adjust the par focal.

These objectives are designed on JIS standard (Japanese Standard, 36mm Par Focal distance )

Cat No.            Discription

7185(a)             4×(0.10)

7185(b)             10×(0.25)

7185(c)             40×(0.65)SL

7186(d)             100×(1.25)SL