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COMPOUND UNIVERSAL MICROSCOPE-STAGE MINERAL HOLDER

MAKER: R & J Beck

MODEL: 'INTERNATIONAL' or 'LARGE BEST' or 'GRAND' MICROSCOPE or 'IMPROVED MICROSCOPE WITH SWINGING SUBSTAGE'

c. 4th QTR 19TH C.

International Micro Mineral Holder

International Micro Mineral HolderThe Stage Mineral Holder is a device for holding a hard irregular object, like a rock or mineral. The distance between the two sets of prongs is adjustable. With the object held firmly between the two sets of prongs, the distance between the prongs can be locked with the brass knurled knob and the specimen can be rotated with either black knob. This is an uncommon accessory, compared to many others.