Ernst Leitz (Firm) · Wetzlar ; New York : Ernst Leitz · leaf 53
Abbes Drawing Camera. — 49 No. 79. The same rigidly attached to eye-piece I. The drawingprism is thus permanently fixed in the optical axis, beingfirmly clamped to the tube by means of a thumb-screw 14.
Microscopy · Optometry · Equipment and supplies
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