Thatcher's Calculating Instrument, by Keuffel & Esser Co., New York, No. 4012 / 4142, patd. by Edwin...
Richter Mathematical Blocks, red, stone, and blue shapes in two trays, in maker's box with...
Model 5 National Cash Register, by National, Dayton, Ohio, No. 168386, patd. dates to June 13. 1894...
Model 6 National Cash Register, No. S38760, with two rows of keys, marquee, and brass foliate-cast...
Hammond Model I Typewriter, with curved two-row keyboard of ebony "piano" keys, enclosed mechanism...
World Type Writer by the Typewriter Improvement Co., Boston, No. 13450, patd. October 12 1886, with...
Two Boxwood Rules, one by Merrifield & Co., New York, with navigational tables; the other a slide...
Fifteen Slide Rules, including Eugene Dietzgen Co. Maniphase rule in box; Keuffel & Esser Co...
Gurley Dry Capacity Measures, three nickel-plated measures and a nested set of four tubular...
Sike's Hydrometer, No. 6674, with bone thermometer, brass bulb, eight brass weights on bone pegs...
Zeiss Dipping Refractometer, Carl Zeiss, Jena, No. 8835, with vulcanite-covered tube, black enamel...
Pocket Coin Balance by Holt, with turned steel beam, pointer with finial at the tip, and two brass...
Weights and Measures, a cased pocket coin balance with weights; a set of American brass nesting...
Two Balances and Weights, a brass beam balance on mahogany base; a cast-iron counter scale; a set of...
Three Balances, a brass postage scale; a counter postage scale; a beam balance on oak base, ht. 12...
Fairbanks Cast-Iron Counter Scale, with transfer-decorated china tray depicting blind Justice, later...
Springless Auto-Scale, by Automatic Scale Co. Ltd., Manchester & London, No. 752461, with original...
Analytical Chain Balance by Griffin & George Ltd., London, with micrometer wheel, plummet, brass...
Early Cased Beam Balance by J.M. Evans, Essex, Connecticut, with brass pillar, finial, beam and...
Analytical Beam Balance by Seederer-Kohlbusch, New Jersey, with lacquered brass pillar, divided beam...
Apothecary Balance, with twin nickel-plated pans, marble platform, and polished cherry case with...
Victorian Brass Beam Balance, pat. 29876, with faceted vase-shaped pillar, scrolling bracket with...
Brass Beam Balance by Day & Millward, with steel beam on counterpoised bracket with screw-thread...
Grover & Baker Sewing Machine, No. 10574, with flywheel-operated mechanism, hinged bedplate with...
Salesman's Sample Model of a Farm Plow, lg. 11 in., with stand...
Patent Model of a Machine for Dressing Wood and Stone, No. 238290, granted March 1. 1881 to Nicholas...
Patent Model of an Apparatus for Carburetting Gases, with patent tag to S.T. Mc.Dougall, Jan 3 1865...
Two Miniature Brass and Steel Steam Engine Models, a single-cylinder horizontal engine with double...
Crosby Steam Gauge for A. H. Moulton, No. 542407, with 9 1/2-inch dia. silvered dial engraved in...
Rutland Railroad Steam Locomotive Bell and Number Plate, Vermont, a 14-inch dia. brass bell on...
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