This is description of this part:
Manufacturer: Kosmos Stuttgart
Model: 170/- 4/0.10
Magnification: 4x
Correction: Achromat
Numerical Aperture: 0.10
Tube Length: 170 mm
Focal Length: 33 mm (37 mm?)
Cover Glass: No
Immersion: No
Thread: RMS
Objective lens of excellent optical quality.
Currently, Kosmos Stuttgart sells plastic educational microscopes for children imported from China.
High-quality optical microscopes were once sold under this brand (or Humboldt), primarily those manufactured at the Hertel & Reuss factory in Kassel.
What is this part needed for?
- If you have a Kosmos microscope without objectives and need to upgrade it using original parts
- If you have a Kosmos microscope that doesn't have an objective lens with this magnification and want to upgrade it
- If you have such an objective lens, but it's of very poor quality or damaged
- If you're cautious and want to have such an objective lens on hand
- If you're looking for a very good 5x objective lens for your microscope from another manufacturer
- If you're looking for a good quality lens with for macro photography
