What to look for in a dissecting microscope?

[mamestraconfigurata]

I used a dissecting scope a lot when I worked at Ag Can. My favourite one was an old (1950’s?) binocular Leitz with three fixed focal lengths. I don’t even know if they make them any more - I preferred the fixed focal lengths to newer zoom ones. A couple of things - find one that is comfortable to work with. I liked the one I used because the stage was raised, not on the desk top. Binocular is a must. Depending on what you are doing consider a fibre optic light (on Zoom they go around the lower optical site). The heat of a normal lamp will cause water/alcohol to evaporate, or the specimen to get too hot. Mentioned above, make sure the lenses are adjustable - black out attachments are good as long as you don’t need glasses. Again, depending on what you are doing, optical clarity may or may not be essential. Look at the edges of the ring image, to make sure the whole thing is in focus, not just the centre. If possible, and it’s not likely on a dissecting scope, look for a fine focus knob. I’ve never seen one except on a compound scope, but they help. Make sure the focus knob is not hard to turn, or it will be hard to focus. “My” work microscope is here - https://inaturalist.ca/journal/mamestraconfigurata . I don’t have one now, and don’t know how much they cost.