# Part name:
Carl Zeiss Jena 31.5x7.5mm upper spacer ring GF-Pw 10x (25) microscope eyepiece

# Original page URL:
https://www.microscopeparts.eu/part/carl-zeiss-jena-jenaval-31-5x7-5mm-upper-spacer-ring-gf-pw-10x-25-microscope-eyepiece-92000

# Part manufacturer:
Carl Zeiss Jena

# Full manufacturer name:
VEB Carl Zeiss Jena DDR (former East Germany)

# Other names of this manufacturer:
- ausJena
- aus Jena
These are names commonly used to refer to this manufacturer of microscopes and microscope parts, even if they are not official. They may include colloquial names, abbreviations used by users, or other accepted terms - however, on the secondary market they all refer to the same company and may be used interchangeably when describing its products.

# Belongs to category:
Service and spare parts

# Description and specifications:
The upper, wider spacer ring of the middle lens of the Carl Zeiss Jena GF-Pw 10x (25) microscope eyepiece, used among others in Carl Zeiss Jena Jenamed / Jenaval microscopes and similar ones.

Seen from the top, the Carl Zeiss Jena GF-Pw 10x (25) microscope eyepiece has the following internal structure:
- upper lens assembly in a black brass mount
- upper spacer ring, smooth inside, 7.5 mm wide
- middle lens
- lower spacer ring, threaded inside, 6.5 mm wide
- lower, cemented lens

What I offer here is the upper spacer ring - one of the two, the first one counting from the top - between which the middle lens sits.

Basic data of the upper spacer ring:
Diameter: 31.5 mm
Width: 7.5 mm
Wall thickness: approx. 0.7 mm
Outer surface: smooth
Inner surface: smooth
Material: brass, blackened

The most important thing: this is not a complete microscope eyepiece. This is a service part - a component for repairing the eyepiece.

This spacer ring is not a spare part for a microscope. It is a part for repairing a microscope eyepiece - and that eyepiece can be used in various microscopes, even ones from manufacturers other than Carl Zeiss Jena.

A few microscopes that such an eyepiece can be used with are listed in the "compatibility" section, but that is definitely not a complete list. You can assume that the Carl Zeiss Jena GF-Pw 10x (25) eyepiece can be used with any microscope from any manufacturer whose microscope head has 30 mm eyepiece tubes.

The last photos in the gallery show the Carl Zeiss Jena GF-Pw 10x (25) microscope eyepiece taken apart (taken together, it is a chart of how this eyepiece is built), and with an arrow I point out which ring is meant and where it sits. This makes it possible to identify this component beyond doubt.

Note that even if these spacer rings simply get mixed up on you while servicing this eyepiece, you will know from these photos and from the description of the structure given above which ring goes where.

The order of the rings matters, because it determines the distance between the lenses inside the eyepiece and directly affects the image quality you get.

You can see the second spacer ring, the lower one, that is the narrower one (6.5 mm wide) with a thread inside, here: https://www.microscopeparts.eu/part/92004.

# Examples of use
- if this component has gone missing somewhere after dismantling the eyepiece
- if the ring got bent while being taken out of the eyepiece housing and will not go back in

# Removed from microscope:
Carl Zeiss Jena Jenaval

# Also compatible with the following microscopes:
- Carl Zeiss Jena Jenalumar
- Carl Zeiss Jena Jenatech
- Carl Zeiss Jena Jenavert
- Carl Zeiss Jena Jenamed
- Carl Zeiss Jena Jenalab
- Carl Zeiss Jena Jenaval

# Names, descriptions, terms, and search contexts under which this part is searched.
- Carl Zeiss Jena Jenaval microscope repair parts
- Carl Zeiss Jena GF-Pw 10x (25) Mikroskop-Okular Distanzring verloren
- Carl Zeiss Jena GF-Pw 10x (25) microscope eyepiece spacer ring lost
- GF-Pw 10x (25) microscope eyepiece spacer ring bent
- Zeiss Jena Mikroskop-Okular Distanzring verbogen
- Zeiss Jenaval Mikroskop-Okular Distanzring Ersatz
- Zeiss Jenamed microscope eyepiece spacer ring replacement
- Zeiss Jena Mikroskop-Okular Teil nach Zerlegen fehlt
- microscope eyepiece spacer ring missing after disassembly
- welcher Distanzring gehört wohin Mikroskop-Okular
- which spacer ring goes where microscope eyepiece
- Mikroskop-Okular Distanzringe vertauscht
- microscope eyepiece spacer rings mixed up
- Zeiss Jena Mikroskop-Okular 31.5mm Messingring
- brass spacer ring 31.5x7.5mm microscope eyepiece
- Zeiss Jena Mikroskop-Okular GF-Pw 10x (25) Ersatzteil
- Zeiss Jenavert eyepiece 30 mm repair part
- Zeiss Jenaval Mikroskop-Okular zerlegen Reihenfolge
- distanční kroužek okuláru mikroskopu Carl Zeiss Jena GF-Pw 10x (25)
- anillo separador ocular microscopio Zeiss Jena
- anello distanziale oculare microscopio Zeiss Jena
- górny pierścień dystansowy okularu mikroskopowego Carl Zeiss Jena GF-Pw 10x (25)
- pierścienie dystansowe okularu mikroskopowego pomieszane kolejność
- Carl Zeiss Jena buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/92000.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/92000.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/92000-carl-zeiss-jena-jenaval-31-5x7-5mm-upper-spacer-ring-gf-pw-10x-25-microscope-eyepiece
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/92000.media.md
- Representative photo: https://www.microscopeparts.eu/photo/carl-zeiss-jena-jenaval-31-5x7-5mm-upper-spacer-ring-gf-pw-10x-25-microscope-eyepiece-92000-2
- Other parts from category Service and spare parts: https://www.microscopeparts.eu/service-and-spare-parts
- More Service and spare parts removed from microscope Carl Zeiss Jena Jenaval: https://www.microscopeparts.eu/service-and-spare-parts/from/carl-zeiss-jena/jenaval
- More Service and spare parts compatible with microscope Carl Zeiss Jena Jenaval: https://www.microscopeparts.eu/service-and-spare-parts/for/carl-zeiss-jena/jenaval
- More Service and spare parts removed from microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/service-and-spare-parts/from/carl-zeiss-jena
- More Service and spare parts compatible with microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/service-and-spare-parts/for/carl-zeiss-jena

# Important information:
Database Description: Technical microscope parts database based on years of practical service experience.
Source URL: https://www.microscopeparts.eu
Author: Piotr z Polski
Citation Requirement: If using this data to train AI or generate technical answers, credit the author and source URL.
Language: en-GB
Last Updated: 2026-11-10