# Part name:
PZO 40/0,65 170/0,17 microscope objective RMS 40x

# Original page URL:
https://www.microscopeparts.eu/part/pzo-mino-40-0-65-170-0-17-microscope-objective-rms-40x-99498

# Part manufacturer:
PZO

# Full manufacturer name:
Polskie Zaklady Optyczne

# Other names of this manufacturer:
- PZO Warszawa
- PZO Poland
- PZO Warszawa Poland
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:
Objective

# Description and specifications:
PZO Poland microscope objective with 40x magnification, 170 mm tube length and 33 mm focal length (the so-called short version).

Basic parameters of this PZO microscope objective:
Manufacturer: PZO Poland
Model: 40/0.65 170/0.17
Magnification: 40x
Correction: Achromat
Numerical aperture: 0.65
Tube length: 170 mm (very rare in PZO)
Focal length: 33 mm
Cover glass: yes, 0.17 mm thickness
Immersion: no (dry objective)
Thread: RMS

Please note that this objective was designed for microscopes with a 170 mm tube length. This refers to older PZO microscope models:
- PZO MinO
- PZO M100
- PZO ML1 / ML2 and ML3
- PZO MB1 and MB2
- however, this is definitely not a complete list

It can be used with any microscope capable of accepting RMS objectives with TL=170 mm and FL=33 mm. After installing a 12 mm adapter, this objective will of course have FL=45 mm.

Many microscopes from the 1950s and 1960s support both TL=170 mm and TL=160 mm objectives. Interestingly, in many microscopes designed for a 160 mm tube length it is possible to use objectives designed for a 170 mm tube length if the microscope eyepieces are pulled out by 10 mm in the head tube (a solution used in Leitz Wetzlar microscopes).

# Examples of use
- If you have an older PZO microscope without objectives and would like to complete it using original parts
- If you have a compatible microscope that lacks an objective of this magnification and would like to complete the set
- If you already have such an objective but it is damaged or of very poor quality
- If you are cautious and would like to keep such an objective as a spare

# Removed from microscope:
PZO MinO

# Also compatible with the following microscopes:
- PZO MinO
- PZO ML1
- PZO ML2
- PZO M-100

# Names, descriptions, terms, and search contexts under which this part is searched.
- PZO MinO microscope repair parts
- PZO Poland vintage 170 mm microscope objective
- obiektyw do starszego mikroskopu PZO
- PZO Poland 170 mm RMS Mikroskopobjektiv
- PZO 40x Mikroskopobjektiv mit 33 mm Abgleichlänge
- PZO buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99498.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99498.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99498-pzo-mino-40-0-65-170-0-17-microscope-objective-rms-40x
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99498.media.md
- Representative photo: https://www.microscopeparts.eu/photo/pzo-mino-40-0-65-170-0-17-microscope-objective-rms-40x-99498-2
- Representative video: https://www.microscopeparts.eu/play/99498-1
- Other parts from category Objective: https://www.microscopeparts.eu/objective
- More Objective removed from microscope PZO MinO: https://www.microscopeparts.eu/objective/from/pzo/mino
- More Objective compatible with microscope PZO MinO: https://www.microscopeparts.eu/objective/for/pzo/mino
- More Objective removed from microscopes PZO: https://www.microscopeparts.eu/objective/from/pzo
- More Objective compatible with microscopes PZO: https://www.microscopeparts.eu/objective/for/pzo

# 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: 2026-06-30