Other second hand optics (lenses, strange things etc)
Click on the picture to see the products.
This section contains mostly old lenses ,military lens assemblies, mounts and tripods. There are some photographic lenses and filters.
Although not common, I do sometimes have spectroscopes, polariscopes, dichroscopes, refractometers and light sources. I've even been tempted to buy table spectrometers but I've no idea how to use one!