Beck, Conrad, 1864- · London, R. & J. Beck, Ltd. · leaf 100
be, Royal Microscopical Society Standard No. 1Diameter of substage, Royal Microscopical Societyi Standard .....Diameter of mirror ...■.,Focal length of mirror ... Vertical travel of mirror Tube length 140 to Outside diameter of upper portion of drawtube Diameter of object glass stem Distance from… … Fig 92 -No. 3210, Standard London Microscope, with plain tubularBubstage and dust-tight double noaepiece. r, 97
Microscopy
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