Surplus Shed Adjustable slit mechanisms

[Merlin66]

These are currently out of stock at SS.

Ideal for the DIY spectrograph builder. Adjustable from 0 to 3mm gap, 6mm effective height.
Limited availability $30 plus postage.

[Merlin66]

Some sold....
Still some available.
Other than for DIY spectroscopes, ideal for a Foucault tester set-up.

[Merlin66]

Last few days of availability....after the 18 May the remaining slit assemblies will be retained for the spectroscopy forum......