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X-Ray Tube by Leybold, c. 1929Cologne, with regenerator and separate unit for the connection to a
X-Ray Tube by Leybold, c. 1929Cologne, with regenerator and separate unit for the connection to a Gaede vacuum pump, with ground-glass connector a...
Sliding Induction Coil based on Design by Du Bois-Reymond, c. 1890Manufactured by Ludwig Schulmeister, Vienna. An electrostatic generator, various...
Large Mercury Arc Rectifier, c. 1930Signed: "GEC Rectifiers Ltd., Stafford, England, 50549", large
Large Mercury Arc Rectifier, c. 1930Signed: "GEC Rectifiers Ltd., Stafford, England, 50549", large glass vacuum chamber, height 24 in., Ø 9 ½ in.,...
Early German Step Counter, c. 1780Zinc sheet and brass, soldered, silvered dial with hand-engraved
Early German Step Counter, c. 1780Zinc sheet and brass, soldered, silvered dial with hand-engraved numerals, 4 units up to 10.000 steps, size 3 ¾ ...
French Galvanometer by Carpentier, c. 1880J. Carpentier, Paris. Used for charge measurement and
French Galvanometer by Carpentier, c. 1880J. Carpentier, Paris. Used for charge measurement and polarization, walnut case, original glass cover, o...
2 Physical Demonstration Instruments, c. 19001) Aluminum plate electrometer by A. Pichler's Wwe,
2 Physical Demonstration Instruments, c. 19001) Aluminum plate electrometer by A. Pichler's Wwe, Vienna. Brass, height 10 ½ in. - And: 2) Ohmmeter...
Group of 5 Electron Tubes1) Maltese cross tube, length 12 ¼ in. - 2) Goldstein tube, length 13 in. -
Group of 5 Electron Tubes1) Maltese cross tube, length 12 ¼ in. - 2) Goldstein tube, length 13 in. - 3) 2 Crookes tubes, height 12 ½ and 13 ¾ in. ...
Gundelach X-Ray Tube, c. 1915"Moment Röhre", with regenerator, etched serial no. 134442, glass
Gundelach X-Ray Tube, c. 1915"Moment Röhre", with regenerator, etched serial no. 134442, glass bulb without damage, length 18 7/8 in.Zustand: (2/-...
Wimshurst's Electrostatic Machine, c. 1955Manufactured by Griffin & George, London. A pair of
Wimshurst's Electrostatic Machine, c. 1955Manufactured by Griffin & George, London. A pair of contrarotating discs with strips of tin foil on the ...
Small Wimshurst's Electrostatic Machine, c. 1920Toy and didactic model, disc diameter 7 in. Hand-
Small Wimshurst's Electrostatic Machine, c. 1920Toy and didactic model, disc diameter 7 in. Hand-turned, complete with Leyden jars, conductors, be...
Motor Mercury Interrupter, c. 1900Gianoli & Lacoste, Paris. With electric motor and glass container for mercury, on walnut base, size 8 ¾ x 11 ½ i...
2 Induction Coils and Physical Demonstration Models, c. 19101) Coil on mahogany base, 9 7/8 x 4 ¾
2 Induction Coils and Physical Demonstration Models, c. 19101) Coil on mahogany base, 9 7/8 x 4 ¾ in. - 2) Sliding induction coil, 11 x 3 ½ in. - ...
Physics Catalogs 1910-1955, Annuals and Jubilee Publications1) Phywe, Hauptkatalog Physik, 1955. "
Physics Catalogs 1910-1955, Annuals and Jubilee Publications1) Phywe, Hauptkatalog Physik, 1955. "Physikalische Geräte", 254 pages. - 2) Phywe, "E...
Physical Demonstration Models, c. 1910 1) Switch contact rheostat, with 3 decades, resistances are
Physical Demonstration Models, c. 1910 1) Switch contact rheostat, with 3 decades, resistances are placed on the back, width 19 5/8 inch, height 1...
2 European Taxidermy Displays, c. 19201) Pair of pheasants in landscape, 40 x 9 ½ x 19 in. - And: 2)
2 European Taxidermy Displays, c. 19201) Pair of pheasants in landscape, 40 x 9 ½ x 19 in. - And: 2) 9 birds, a bat and a stoat, with grass and br...
6 Physical Teaching DisplaysTopics: magnetism, acoustics, pressure, sound film, telephone and
6 Physical Teaching DisplaysTopics: magnetism, acoustics, pressure, sound film, telephone and television. Size 24 4/5 x 36 1/5 in.Zustand: (3+/-)6...
Swiss Precision Construction Kit "The Automat", c. 1960Wood case with 3 detachable trays, consisting
Swiss Precision Construction Kit "The Automat", c. 1960Wood case with 3 detachable trays, consisting of hundreds of elementary gears, transmission...
Special Apparatus "Ondographe Hospitalier", 1902Instrument for autographically recording wave
Special Apparatus "Ondographe Hospitalier", 1902Instrument for autographically recording wave forms of varying currents, especially rapidly varyin...
Motor Mercury Interrupter by Max Kohl, c. 1900Chemnitz, Germany. With glass container for mercury,
Motor Mercury Interrupter by Max Kohl, c. 1900Chemnitz, Germany. With glass container for mercury, electric motor, porcelain switch, height-adjust...
French Precision Instrument, 1928Manufactured by F. Pellin, Paris. Engraved on the base "A.O. 14.
French Precision Instrument, 1928Manufactured by F. Pellin, Paris. Engraved on the base "A.O. 14. 1928", brass, circular black glass plate over co...
3 Measuring Instruments1) Refractometer by Carl Zeiss in Jena, no. 1495, with flowing water temperature control, height 11 ¾ in., with case, c. 19...
Large Current-Generating Dynamo, c. 1910With label "Franz Hugershoff, Leipzig", original painted
Large Current-Generating Dynamo, c. 1910With label "Franz Hugershoff, Leipzig", original painted cast iron, large wheel Ø 12 ¾ in., electric motor...
Electrophysical Demonstration Model, c. 1890France, marked "HRFA", mahogany, thick-walled glass
Electrophysical Demonstration Model, c. 1890France, marked "HRFA", mahogany, thick-walled glass container (fixed to the base), 6 electrical connec...
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