# DIN objectives adaptation for microscope?

**URL:** <https://openflexure.discourse.group/t/din-objectives-adaptation-for-microscope/384>\
**Category:** General\
**Created:** [19 January 2021 12:51 UTC](https://openflexure.discourse.group/t/din-objectives-adaptation-for-microscope/384 "2021-01-19T12:51:14Z")\
**Posts on this page:** 1\
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**Author:** ![Lost](https://avatars.discourse-cdn.com/v4/letter/l/22d042/32.png) [@Lost](https://openflexure.discourse.group/u/Lost)\
**Post date:** [20 January 2021 13:10 UTC](https://openflexure.discourse.group/t/din-objectives-adaptation-for-microscope/384/3 "2021-01-20T13:10:25Z")

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Agh. Soviet GOST standart claims that DIN objectives with D 20,2 mm thread are RMS standart (1936 version of 1858 standart).

 ![gost2](https://global.discourse-cdn.com/free1/uploads/openflexure/original/1X/f9d99a87c918512a1b2113b1ab373af60724ca0b.png) ![gost](https://global.discourse-cdn.com/free1/uploads/openflexure/original/1X/5e9f21b14858996958c2fc7fa4d6fe3d31dbccbe.png)  
There are also existed 25 mm Leicas and 27 mm, 20 mm & 19 mm Zeiss and co objectives. Most of those are antique, but I have fairly good 20.2 Nikons, Zeiss and LOMO objectives. All those are for 160 mm microscope and has different length.

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