# Part name:
Lomo MMU-3 / MMY-3 metallurgical microscope stand column holder with coarse focus rack - fixed part of the ММУ-3 focusing body

# Original page URL:
https://www.microscopeparts.eu/part/lomo-mmu-3-mmy-3-metallurgical-microscope-stand-column-holder-with-coarse-focus-rack-fixed-part-of-the-mmu-99523

# Part manufacturer:
Lomo

# Full manufacturer name:
Leningrad Optical Mechanical Association

# Other names of this manufacturer:
- LZOS
- TOMP
- WTOMP
- WOOMP
- GOMZ
- LOOMP
- Progres
- Progress
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:
Housings and its parts

# Description and specifications:
The stand column holder with the coarse focus rack forms the fixed part of the focusing body of the Lomo MMU-3 metallurgical reflected-light microscope.

This microscope part performs two essential functions:
- mounting the microscope body onto the stand column
- providing coarse focus (macro movement) along the permanently mounted rack

More precisely, this assembly consists of the following components:
- stand column clamp
- stand column locking screw
- dovetail guide on which the microscope body with the optics moves
- rack on which the microscope body with the optics moves

Please note:
- the original Cyrillic designation of this model is: ЛОМО ММУ-3
- for people using the Latin alphabet who know that the manufacturer is "Lomo", it visually appears as: Lomo MMY-3
- however, the original designation is pronounced: Lomo MMU-3

The last photograph in the gallery includes an arrow indicating exactly which microscope part is being offered and where it is installed inside the microscope, making it easy to identify this component unambiguously.

# Examples of use
- if you have a Lomo MMU-3 microscope body without this component (this is possible if the previous owner used it on a custom-made stand)
- if you already have this component but it is incomplete, damaged or in poor condition
- if you only need one of its individual components, for example only the mounting screw or only the rack
- if you own a Lomo MMU-3 microscope stand but would like to adapt it as part of your own DIY project to mount the body of another microscope

# Removed from microscope:
Lomo MMU-3

# Also compatible with the following microscopes:
Lomo MMU-3

# Names, descriptions, terms, and search contexts under which this part is searched.
- Lomo MMU-3 microscope repair parts
- Lomo MMU-3 / MMY-3 EPI Auflicht Mikroskop Stativ Halter
- Lomo MMU-3 Mikroskop Grubtrieb Zahnstange
- Lomo MMU-3 EPI microscope stand holder
- Lomo MMY-3 microscope coarse focus rack
- Lomo buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99523.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99523.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99523-lomo-mmu-3-mmy-3-metallurgical-microscope-stand-column-holder-with-coarse-focus-rack-fixed-part-of-the-mmu
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99523.media.md
- Representative photo: https://www.microscopeparts.eu/photo/lomo-mmu-3-mmy-3-metallurgical-microscope-stand-column-holder-with-coarse-focus-rack-fixed-part-of-the-mmu-99523-2
- Representative video: https://www.microscopeparts.eu/play/99523-1
- Other parts from category Housings and its parts: https://www.microscopeparts.eu/housings-and-its-parts
- More Housings and its parts removed from microscope Lomo MMU-3: https://www.microscopeparts.eu/housings-and-its-parts/from/lomo/mmu-3
- More Housings and its parts compatible with microscope Lomo MMU-3: https://www.microscopeparts.eu/housings-and-its-parts/for/lomo/mmu-3
- More Housings and its parts removed from microscopes Lomo: https://www.microscopeparts.eu/housings-and-its-parts/from/lomo
- More Housings and its parts compatible with microscopes Lomo: https://www.microscopeparts.eu/housings-and-its-parts/for/lomo

# 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: 2026-07-01