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Fitted with an achromatic objective of FL about 178mm and clear aperture of 23mm. Eye piece 8×, Ramsden type with cross line graticule. The focusing is done by rack and pinion mechanism and range f...
Fitted with an achromatic objective of FL about 178mm and clear aperture of 23mm. Eye piece 8×, Ramsden type with cross line graticule. The focusing is done by rack and pinion mechanism and range f...