# Part name:
Leitz Wetzlar 13/0.40 170/- RMS 13x microscope objective PN 519237

# Original page URL:
https://www.microscopeparts.eu/part/leitz-sm-wetzlar-13-0-40-170-rms-13x-microscope-objective-pn-519237-99831

# Part manufacturer:
Leitz

# Full manufacturer name:
Leitz Wetzlar

# Other names of this manufacturer:
- Leitz Wetzlar, West Germany
- E. Leitz Wetzlar GmbH
- Ernst Leitz Wetzlar
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:
Leitz Wetzlar microscope objective with a unique 13x magnification.

Manufacturer: Leitz Wetzlar
Magnification: 13x
Color correction: achromat
Number in the manufacturer's 1967 catalog: 519 237 (alternative notation: 519237)
Numerical aperture N.A.: 0.40
Tube length: 170 mm
Parfocal length: 37 mm
Working distance: 3.4 mm
Cover glass: either - the objective works both without and with a cover glass
Immersion: no (dry objective)
Thread: RMS

Because it works without a cover glass and has a high numerical aperture N.A., this objective can be attractive for macro photographers. It allows projection directly onto the camera sensor - without any intermediate optics.

This objective was removed from a Leitz SM microscope, but it fits most Leitz Wetzlar microscopes made before roughly 1980 (SM, SM-D, SM-Lux, Dialux, Ortholux, Orthoplan, etc.).

Some useful information about Leitz Wetzlar objectives with TL=170 mm and 37 mm parfocal length:
- most Leitz microscopes made before roughly 1980 accept objectives for both 160 mm and 170 mm tube length
- many Leitz microscopes accept objectives with both 37 mm and 45 mm parfocal length
- with an 8 mm RMS extension adapter, such an objective gets a parfocal length of 45 mm. Leitz made such adapters under the name "Plezy" - but many users make their own, from metal or on 3D printers

Like a large share of microscope objectives made in Germany in the 1960s and 1970s, this objective has a 37 mm parfocal length and a 170 mm tube length. For this reason it is often used as a replacement objective for other German microscopes, e.g.:
- Steindorff Berlin
- Kremp Wetzlar
- Hertel & Reuss
- Steinmar Berlin
- CBS Beck Kassel
- ROW Rathenow

This objective fits practically any microscope from any manufacturer, as long as it has an RMS thread and accepts objectives with TL=170 mm and a parfocal length of 33 / 37 mm (or 45 mm with a suitable adapter). Some examples of such microscopes are listed in the "compatibility" section, but this list is not complete.

# Examples of use
- if you own a Leitz Wetzlar microscope and this is exactly the objective missing from your set
- if you already have such an objective in your microscope, but it is in very poor condition or damaged
- if you want to keep such an objective as a spare
- if you want to use this objective on another, compatible microscope
- if you want to use this objective for macro photography at a 13:1 reproduction ratio

# Removed from microscope:
Leitz SM

# Also compatible with the following microscopes:
- Leitz Dialux
- Leitz SM
- Leitz Ortholux II
- Leitz Orthoplan
- Leitz SM-D
- Hertel & Reuss Studio C
- Hertel & Reuss CN-fl
- Steinmar Berlin Binocular biological
- Steindorff Berlin Model S
- Steindorff Berlin Model M.Y.
- Steindorff Berlin Model C.Y.N.
- Leitz Wetzlar microscope
- Steindorff Berlin Model B.Y.
- Steindorff Berlin Microbe Hunter
- Kosmos Binocular
- Kosmos Humboldt
- Kosmos Modell C
- Hertel & Reuss Metall
- Hertel & Reuss Studio II
- Hertel & Reuss CN-hf
- Will Wetzlar V200
- Will Wetzlar V100
- Leitz SM-LUX
- CBS CBS monocular biological microscope
- Eschenbach Kolleg SH45
- ROW UFD 121
- ROW UFD 122
- CBS Binocular Model 01
- CBS AS 2
- CBS Binocular Model 02
- CBS Trinokular Model 01

# Names, descriptions, terms, and search contexts under which this part is searched.
- Leitz SM microscope repair parts
- Leitz Wetzlar 13/0.40 170/- Objektiv 37 mm
- Leitz Wetzlar 13x objective 519237
- Leitz 13x Mikroskop Objektiv für SM und Dialux
- Leitz SM / SM-Lux 13x objective replacement
- Leitz Ortholux / Orthoplan 13x Objektiv Ersatz
- Leitz Achromat 13/0.40 Tubuslänge 170 mm
- Leitz 13x achromat for 170 mm tube length
- Leitz 13x objective for macro photography without cover glass
- Leitz 13x Objektiv für Makrofotografie direkt auf Kamerasensor
- Leitz 13x objective with 8 mm adapter for 45 mm parfocal
- Ersatzobjektiv 13x für Steindorff / Kremp Mikroskop
- objektiv k mikroskopu Leitz Wetzlar 13x
- objetivo Leitz Wetzlar 13x 170 mm
- objetivo 13x para microscopio Leitz SM
- obiettivo Leitz Wetzlar 13x 170 mm
- obiettivo 13x per microscopio Leitz Dialux
- obiektyw mikroskopowy Leitz Wetzlar 13x
- Leitz buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99831.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99831.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99831-leitz-sm-wetzlar-13-0-40-170-rms-13x-microscope-objective-pn-519237
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99831.media.md
- Representative photo: https://www.microscopeparts.eu/photo/leitz-sm-wetzlar-13-0-40-170-rms-13x-microscope-objective-pn-519237-99831-2
- Representative video: https://www.microscopeparts.eu/play/99831-1
- Other parts from category Objective: https://www.microscopeparts.eu/objective
- More Objective removed from microscope Leitz SM: https://www.microscopeparts.eu/objective/from/leitz/sm
- More Objective compatible with microscope Leitz SM: https://www.microscopeparts.eu/objective/for/leitz/sm
- More Objective removed from microscopes Leitz: https://www.microscopeparts.eu/objective/from/leitz
- More Objective compatible with microscopes Leitz: https://www.microscopeparts.eu/objective/for/leitz

# 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: 2026-09-28