# Part name: Zeiss Photomicroscope / Standard WL specimen holder for round, rotating mechanical XY microscope stage | side shift mechanism # Original page URL: https://www.microscopeparts.eu/part/zeiss-photomicroscope-standard-wl-specimen-holder-for-round-rotating-mechanical-xy-microscope-stage-side-shift-99666 # Part manufacturer: Zeiss # Full manufacturer name: Carl Zeiss West Germany # Other names of this manufacturer: - Carl Zeiss West - Carl Zeiss West Germany - Opton 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: XY-stages (specimen holders) # Description and specifications: Side-travel mechanism complete with specimen holder and spring-loaded specimen clamp for the round rotating XY mechanical microscope stage used on Carl Zeiss microscopes (Oberkochen, West Germany). These microscope stages were fitted to, among others: - Zeiss Standard WL / WL 89 - Zeiss Universal - Zeiss Photomicroscope (PM / Phomi) - Zeiss Photomicroscope II (PM II / Phomi II) - Zeiss Photomicroscope III (PM3 RS / Phomi III) - Zeiss Ultraphot The round Zeiss stages used on this microscope series incorporate the front-to-back travel mechanism within the main stage body. The side-to-side movement, however, is integrated into the specimen holder assembly itself. That is exactly the stage component presented here. This is a component of the microscope stage rather than a component dedicated to a particular microscope model. Since this stage can be fitted to many Carl Zeiss microscopes, this specimen holder assembly is likewise compatible with numerous Carl Zeiss models. This complete assembly consists of the following components: - side-travel control knob - internal worm shaft providing lateral movement - specimen holder with spring-loaded specimen clamp - the specimen holder is mounted on a carriage travelling along the worm shaft Important: although this component belongs to a round rotating microscope stage, it is not part of a polarizing stage. It belongs to a standard transmitted-light stage intended for bright-field and dark-field microscopy. The following dimensions determine compatibility and whether this assembly can be installed on a particular microscope stage: - spacing of the two side locating pins: 33.5 mm, measured from the outside edge of one pin to the outside edge of the other - diameter of the locating pins: 2.5 mm each - centre-to-centre spacing of the locating pins: 31.5 mm - diameter of the central mounting screw securing the assembly to the stage: 3 mm - location of the mounting screw: centrally positioned between the locating pins If the spacing of the locating pins matches, this assembly can also be installed on microscope stages manufactured by other companies. Individual components of this assembly are frequently damaged. Replacing the complete assembly offered here can solve, among others, the following problems: - when the side-travel control knob has been broken, bent or otherwise damaged; this is common because the knob protrudes beyond the outline of the microscope stage and is mounted on a relatively slender shaft - when the mounting screw securing the complete assembly to the stage breaks; this is also common because the assembly projects beyond the flat surface of the stage - when the worm shaft becomes worn, causing the specimen holder to move unevenly or, in some cases, preventing movement altogether - when the spring inside the specimen clamp breaks; this is a well-known weakness of this design The gallery photographs show the exact dimensions of this component. The final photographs additionally show the complete microscope stage from which this specimen holder assembly was removed. An arrow indicates the exact stage component being offered, making visual compatibility easy to verify. The accompanying video also demonstrates the operation of the spring-loaded specimen clamp. # Examples of use - if you have a stage that is missing the specimen holder - if you want to install this holder on a stage in a microscope from another manufacturer # Removed from microscope: Zeiss Photomicroscope # Also compatible with the following microscopes: - Zeiss Photomicroscope - Zeiss Photomicroscope II - Zeiss Photomicroscope III RS - Zeiss Universal - Zeiss Standard WL - Zeiss Ultraphot # Names, descriptions, terms, and search contexts under which this part is searched. - Zeiss Photomicroscope microscope repair parts - Carl Zeiss PM3 RS microscope stage specimen holder - Zeiss Phomi und Universal Mikroskoptisch Objektführer - Zeiss Standard WL XY Kreuztisch Kreuzmechanismus - Carl Zeiss Ultraphot Mikroskop Kreuztisch Präparathalter - Zeiss Universal microscope XY stage clamps - Zeiss buy spare parts # Related URLs: - Markdown po polsku: https://www.serwismikroskopowy.pl/part/99666.md - Markdown auf Deutsch: https://www.mikroskopteile.de/part/99666.md - Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99666-zeiss-photomicroscope-standard-wl-specimen-holder-for-round-rotating-mechanical-xy-microscope-stage-side-shift - Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99666.media.md - Representative photo: https://www.microscopeparts.eu/photo/zeiss-photomicroscope-standard-wl-specimen-holder-for-round-rotating-mechanical-xy-microscope-stage-side-shift-99666-2 - Representative video: https://www.microscopeparts.eu/play/99666-1 - Other parts from category XY-stages (specimen holders): https://www.microscopeparts.eu/xy-stages-specimen-holders - More XY-stages (specimen holders) removed from microscope Zeiss Photomicroscope: https://www.microscopeparts.eu/xy-stages-specimen-holders/from/zeiss/photomicroscope - More XY-stages (specimen holders) compatible with microscope Zeiss Photomicroscope: https://www.microscopeparts.eu/xy-stages-specimen-holders/for/zeiss/photomicroscope - More XY-stages (specimen holders) removed from microscopes Zeiss: https://www.microscopeparts.eu/xy-stages-specimen-holders/from/zeiss - More XY-stages (specimen holders) compatible with microscopes Zeiss: https://www.microscopeparts.eu/xy-stages-specimen-holders/for/zeiss # 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: 2026-08-01