This is description of this part:
Blanking plug for the wide field lens lever (Zeiss P/N 47 30 65) for Carl Zeiss Standard series microscopes.
Zeiss Standard microscopes feature an optional wide field lens (Zeiss P/N 47 30 68). It can be installed in the tube between the objective nosepiece and the observation head. The lens is operated by a lever protruding from the side of the tube. In the manufacturer's documentation, this lever is referred to as "Switch to turn axis, e.g. with wide field changer 0.8x-1x". If this optional microscope component is not installed, the opening intended for the lever is closed with a plastic blanking plug additionally secured by a retaining screw. This listing includes exactly that end cap and screw.
This particular cover was removed from a Zeiss Standard 14 microscope, which is not normally equipped with the lever-operated lens. However, it will most likely fit the majority of other Standard series models, for example:
- Zeiss Standard GFL
- Zeiss Standard 16
- Zeiss Standard WL 89
The blanking plug itself carries the catalog number Zeiss 47 30 65 (alternative notation: Zeiss 473065) and is described as an "intermediate tube cover element".
Not only is this plastic cap frequently lost over the years, but the lever itself or the lens assembly may also become damaged and require removal. In such cases, this blanking plug should be installed to protect the microscope optics from dust.
In the last photographs in the gallery, I use arrows to show exactly which microscope component is being offered and where it is located within the microscope.
What is this part needed for?
- in some used microscopes, this blanking plug is missing
- over the years, the plastic from which this end cap is made may crack or become brittle
- if the wide field lens or its operating lever becomes damaged, the opening should be closed with this cover after removal of the assembly
