• Front side - 44mm dovetail
• Rear side - M42x1 male thread

This adapter allows using M42 cameras on microscopes with 44mm photo port.

Made of high quality aluminium alloy.

Here is the list of microscopes where it will fit:

Zeiss microscope labeled West Germany, Germany or Opton:

To fit the binocular/trinocular head are:

- Standard series: GFL, WL, RA, 14, 16, 18, 20, 25, 25 ICS, and any other numbers or versions (all the black, grey and yellowish white versions) with the exception of the last white and grey Junior models.

- Inverted microscopes of the same era like the Invertoscope and IM series

To fit the upper phototube (and also the binocular head mounted in horizontal position)

- Universal, Photomicroscope and Ultraphot.

To fit the light source:

- All Standard, Universal, Photomicroscope, Ultraphot and inverted series, but only the versions with rear external lamp houses (like the 60, 50, 100) and also its Fluorescence illuminators for mercury burners 50,100 and 150, and some epiilluminators. The spherical "pumkin" lamphouses have a much wider diameter mount

The same dovetail is also employed in some black old photo attachments and some rare Zeiss industrial microscopes.