Objective block x4

The objective blocks fit on the binocular loupes ref. 571 324, 571 326, 571 289, 571 327.
When necessary, it is possible, using an eyepiece micrometer ref. 574140 and an object micrometer ref. 574144, to adjust the objectives on your binocular loupe.
To do this, take a small screwdriver, remove the black part, and use the 3 side screws to move the objective. It is not necessary to adjust both objectives. Most of the time, only one of the 2 is sufficient.