Steps on the Dovetail / アリガタに段差(鏡筒間隔短縮)

Steps on the dovetails will provide two dramatic effects below, just like  killing two birds with one stone.

One is the drastic reinforcement of the connection of the bands, and the other is the shortening of  “D” of the framework of the Binoscope.

(EMS itself achieves the three important tasks of correcting image, right-angle viewing, and the  lateral shift for IPD, with only two relfections; just like killing three birds with  one stone.)