For sale this set consisting of 5 ring panels with different diameters is the central cover for filter holder with a diameter of 31.7mm. The central apertures offer an inexpensive option for dark field microscopy up to a magnification of 40x and a numerical aperture of up to approximately 0.7. The covers come from the 3D printer and you can see that - but they work perfectly, are quite stable and can no longer be seen in the filter holder anyway.

You are always welcome to take a look at the offer in advance in 08525 Plauen. This is expressly desired in order to avoid any doubts and misunderstandings! The purchase amount must be paid in cash upon collection or in advance via Paypal or bank transfer. Renegotiations are excluded as every interested party had the opportunity to view the offer.