File:Illustrated catalogue and price-list of drawing and tracing papers, sun print papers and equipments, drawing instruments and materials, surveying instruments, accessories, etc. - Kolesch and Company. (14781538474).jpg - Wikimedia Commons
Illustrated price list of microscopes, microscopic apparatus and other optical instruments, manufactured by R. & J. Beck, London - Biodiversity Heritage Library
What are some examples of optical instruments and their uses? - Quora