Leitz Leica Ergoplan Z-axis Stop Mechanism

Description

This is another �spare part� from a Leitz (Leica) Ergoplan semiconductor microscope. This module plugs into the left front of the microscope base. It is used to set the upper travel limit opto for the Z-axis (focus) drive of the microscope. The module consists of the external dress plate, the adjustment knob, the reck-and-pinion drive that carries the opto sensor, and the wiring harness which also includes a second bracket with a pair of limit switches..

The knob on the assembly is spring-loaded. In order to engage the pinion, the knob must be pressed inwards. Once the upper travel limit has been established (wafer chucks can be of widely differing heights) then the cover is secured to the knob to prevent accidental movement. Not only does the cover prevent the knob from being pressed inwards to engage the internal clutch, but there is a small cut-out in the knob which is meant to fit over the head of the Allen cap screw in the corner of the dress-plate. This prevents the cover from turning. This is a very useful spare part for Ergoplan users.

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***MPN
***OEM Leitz
***SKU*** DP440