Roughly similar in size to the ones Newton made for the Royal Society as demonstration instruments. https://en.wikipedia.org/wiki/Newton%27s_reflector https://

Roughly similar in size to the ones Newton made for the Royal Society as demonstration instruments. https://en.wikipedia.org/wiki/Newton%27s_reflector https://en.wikipedia.org/wiki/Newton%27s_reflector Very nice and I might look for one of these mirror kits.