prisoptometer
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prisoptometer — instrument for measuring degree of astigmatism Scientific Instruments … Phrontistery dictionary
prisoptometer — … Useful english dictionary
Scientific Instruments — Have you ever been in the middle of a class lecture, medical examination or episode of Star Trek only to realise suddenly that you have no clue what all those gizmos, gadgets and other scientific instruments actually do? If so, your problems are… … Phrontistery dictionary