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"Gasopyrion" Döbereiner's Hydrogen Lighter in Stobwasser Case, c. 1840 With brass igniter, lid,
"Gasopyrion" Döbereiner's Hydrogen Lighter in Stobwasser Case, c. 1840With brass igniter, lid, cap and base rings, original glass insets and cyli...
Carbon-Zinc-Battery by Gustave Trouvé, c. 1890 Signed on the baseplate: "Gve Trouvé Fabricant
Carbon-Zinc-Battery by Gustave Trouvé, c. 1890Signed on the baseplate: "Gve Trouvé Fabricant Bte Eureka Paris", height 11 in. An early pocket-s...
6 Electrostatic Experimental Models, c. 1910 Large gold-leaf electroscope and other instruments.
6 Electrostatic Experimental Models, c. 1910Large gold-leaf electroscope and other instruments.Condition: (3+/-)6 Demonstrationsmodelle für elektr...
Crookes Tubes with Rose Bouquet, c. 1915 Height with stand 13 1/3 in. Condition: (2-3/-) Crookes'
Crookes Tubes with Rose Bouquet, c. 1915Height with stand 13 1/3 in.Condition: (2-3/-)Crookes'sche Röhre mit Rosenbouquet, um 1915Höhe mit Stände...
Group of Physical Demonstration Tubes, c. 1910 1) X-ray tube, length 8 ¼ in. 2) Crookes "Maltese
Group of Physical Demonstration Tubes, c. 19101) X-ray tube, length 8 ¼ in. 2) Crookes "Maltese Cross" tube, length 12 ½ in. And: 3) Crookes tub...
Table for Electrical Experiments, c. 1870 France, inscribed "Table à expériences", with glass plate,
Table for Electrical Experiments, c. 1870France, inscribed "Table à expériences", with glass plate, 2 insulated grips, mahogany ground board, 10 1...
4 Physical Demonstration Tubes, c. 1910 1) Crookes tube, for demonstrating a magnetic altering the
4 Physical Demonstration Tubes, c. 19101) Crookes tube, for demonstrating a magnetic altering the direction of radiant matter, length 13 1/3 in. ...
"Magazin aller neuen Erfindungen, Entdeckungen und Verbesserungen", 17981830 Magazine of all New
"Magazin aller neuen Erfindungen, Entdeckungen und Verbesserungen", 17981830Magazine of all New Inventions, Discoveries and Improvements. The "Mec...
6 Physical Demonstration Models, c. 1910 1) 2 Leyden jars, height 15 and 20 ½ in. 2) Discharger,
6 Physical Demonstration Models, c. 19101) 2 Leyden jars, height 15 and 20 ½ in. 2) Discharger, with 2 ebonite handles and hinge. And: 3) 3 cond...
Single-Barrel Vacuum Pump with Glass Sphere, c. 1900 With glass sphere, barometer gauge and plate on
Single-Barrel Vacuum Pump with Glass Sphere, c. 1900With glass sphere, barometer gauge and plate on hardwood board, size 24 4/5 x 7 4/5 in. In ad...
2 Sparking Pillars by Max Kohl, c. 1910 Heavy iron feet, signed "Max Kohl, Chemnitz", ebonite
2 Sparking Pillars by Max Kohl, c. 1910Heavy iron feet, signed "Max Kohl, Chemnitz", ebonite pillars, height each 25 2/5 in.Condition: (3+/-)2 Fun...
Double-Barrel Vacuum Pump with Syphon Fountain, c. 1900 With 2 glass barrels (one broken) and plate,
Double-Barrel Vacuum Pump with Syphon Fountain, c. 1900With 2 glass barrels (one broken) and plate, brass and iron, size 15 ¾ x 8 ¾ in. In additi...
Ampère Table, c. 1910 Physical demonstration model, used for experiments on the relationship between
Ampère Table, c. 1910Physical demonstration model, used for experiments on the relationship between magnetic fields and electric currents, origina...
Melloni's Thermo Apparatus, c. 1900 Manufactured by Max Kohl, Chemnitz. Brass on iron tripod, height
Melloni's Thermo Apparatus, c. 1900Manufactured by Max Kohl, Chemnitz. Brass on iron tripod, height 10 4/5 in., for thermal radiation experiments....
Group of Electrostatic Demonstration Models, c. 1920 1) Leyden jar, height 9 ½ in. 2) "Der
Group of Electrostatic Demonstration Models, c. 19201) Leyden jar, height 9 ½ in. 2) "Der elektrische Mörser" (electric mortar) for elderberry ba...
7 Electrostatic and Other Demonstration Models, c. 1910 2 electroscopes, 2 coils on board, 2 water
7 Electrostatic and Other Demonstration Models, c. 19102 electroscopes, 2 coils on board, 2 water decomposition apparatuses, 1 metal ring with mea...
Wimshurst's Electrostatic Machine with Instruction Booklets, c. 1920 Unmarked, a pair of contra-
Wimshurst's Electrostatic Machine with Instruction Booklets, c. 1920Unmarked, a pair of contra-rotating discs with strips of tin foil at the runs ...
100 Volumes "Polytechnisches Journal", c. 1832 Between 1832 and 1840 (not complete), published by
100 Volumes "Polytechnisches Journal", c. 1832Between 1832 and 1840 (not complete), published by Johann Gottfried Dingler, with numerous technical...
4 Physical Demonstration Models, c. 1910 On glass pillars, 1 conductor, height 11 2/5 in., and 3
4 Physical Demonstration Models, c. 1910On glass pillars, 1 conductor, height 11 2/5 in., and 3 static inductors, height up to 24 4/5 in.Condition...
Rare Four-Draw Refracting Telescope by George Adams Senior, 1752 With ¾-inch diameter objective
Rare Four-Draw Refracting Telescope by George Adams Senior, 1752With ¾-inch diameter objective lens, polished shagreen-covered body tube, vellum-c...
English Brass Compound Microscope by William Ladd, c. 1880 Signed on the claw foot base: "Willm
English Brass Compound Microscope by William Ladd, c. 1880Signed on the claw foot base: "Willm Ladd, Penton Place, Walworth", no. 2809, original l...
2 Brass Microscopes, c. 1860 1) France, unmarked, original lacquered brass, green and gold-painted
2 Brass Microscopes, c. 18601) France, unmarked, original lacquered brass, green and gold-painted iron base, 2 pillars, tilting stand, double-mirr...
Large and Unusually Constructed Microscope, c. 1880 Unmarked, lacquered and bronzed brass, walnut
Large and Unusually Constructed Microscope, c. 1880Unmarked, lacquered and bronzed brass, walnut foot, convex mirror, rack-and-pinion focusing, co...
Brass Compound Microscope, c. 1860 French compound microscope in mahogany slip-case, probably by "
Brass Compound Microscope, c. 1860French compound microscope in mahogany slip-case, probably by "Secretan, Paris", lacquered and oxidized brass, e...
Brass Compound Microscope, c. 1880 Unsigned, japanned iron horseshoe base, original lacquered brass,
Brass Compound Microscope, c. 1880Unsigned, japanned iron horseshoe base, original lacquered brass, tilting stand, double-mirror, substage pinhole...
Hartnack Brass Compound Microscope, c. 1875 Signed on the draw tube: "E. Hartnack, sucr. de G.
Hartnack Brass Compound Microscope, c. 1875Signed on the draw tube: "E. Hartnack, sucr. de G. Oberhaeuser, Place Dauphine 21, Paris", no. 5415, la...
Reichert Compound Monocular Microscope, c. 1890 Signed on the foot "C. Reichert, Wien", and on the
Reichert Compound Monocular Microscope, c. 1890Signed on the foot "C. Reichert, Wien", and on the tube "C. Reichert, Wien, VIII. Bennogasse", no. ...
Large Collection of Microscopic Preparations, c. 1890 England. 162 labeled preparations, 3 x 1
Large Collection of Microscopic Preparations, c. 1890England. 162 labeled preparations, 3 x 1 in., manufactured by Watson & Son, Baker, Gerrard an...
German Compound Microscope by Messter, 1899 Signed on 2 plaques (case and tube): "Ed. Messter,
German Compound Microscope by Messter, 1899Signed on 2 plaques (case and tube): "Ed. Messter, Berlin N.W., Friedrichstr. 94 u. 95", stand model VI...
Drum-Pattern Microscope, c. 1860 Probably by Hartnack, Paris, original lacquered brass, 3-inch
Drum-Pattern Microscope, c. 1860Probably by Hartnack, Paris, original lacquered brass, 3-inch weighted base, draw tube, fine screw adjustment bene...
Pillischer Compound Brass Microscope, c. 1860 Signed on the claw-footed base: "M. Pillischer,
Pillischer Compound Brass Microscope, c. 1860Signed on the claw-footed base: "M. Pillischer, London", No. 739, original lacquered brass, 2 upright...
3-inch Refracting Telescope by Bardou, mid-19th Century Signed "A. Bardou, Paris". 37 ½ in. main
3-inch Refracting Telescope by Bardou, mid-19th CenturySigned "A. Bardou, Paris". 37 ½ in. main tube, 1 extension, overall length 52 in., rack-and...
English Compound Microscope by Henry Crouch, c. 1870 Signed on the horseshoe base: "Henry Crouch,
English Compound Microscope by Henry Crouch, c. 1870Signed on the horseshoe base: "Henry Crouch, London", serial no. 994, engraved: "MB & Co Ltd, ...
Brass Compound Microscope, c. 1860 English microscope, unmarked, original lacquered brass, tapped
Brass Compound Microscope, c. 1860English microscope, unmarked, original lacquered brass, tapped foot and stage, English base mounted on wooden pl...
Drum-Type Microscope by Bénèche & Wasserlein, c. 1860 Signed on the base: "Bénèche & Wasserlein,
Drum-Type Microscope by Bénèche & Wasserlein, c. 1860Signed on the base: "Bénèche & Wasserlein, Berlin", lacquered brass, draw tube, fine adjustme...
Leitz Brass Microscope, 1898 Signed: "E. Leitz, Wetzlar", no. 40482, original lacquered brass,
Leitz Brass Microscope, 1898Signed: "E. Leitz, Wetzlar", no. 40482, original lacquered brass, fine and coarse adjustment, in double mirror, triple...
Coincidence Rangefinder Wild TM2, 1966 Wild Heerbrugg, Switzerland. No. 1774, 31 ½ in. basic
Coincidence Rangefinder Wild TM2, 1966Wild Heerbrugg, Switzerland. No. 1774, 31 ½ in. basic width, magnification 11,25x, with aluminum quiver, lar...
Stanley Brass Surveyor's Level, c. 1910 No. 103404, signed "Stanley, Great Turnstile, Holborn,
Stanley Brass Surveyor's Level, c. 1910No. 103404, signed "Stanley, Great Turnstile, Holborn, London", on height-adjustable triangular base, equip...
Surveying Compass, c. 1850 Probably France, unsigned, walnut case, engraved windrose, brass scale,
Surveying Compass, c. 1850Probably France, unsigned, walnut case, engraved windrose, brass scale, bubble level, attached telescope, size 9 ½ x 8 ¾...
Otto Fennel Standard Meter, c. 1930 Brass, signed: "Otto Fennel Söhne, Kassel, No. 46889", 1 m at 20
Otto Fennel Standard Meter, c. 1930Brass, signed: "Otto Fennel Söhne, Kassel, No. 46889", 1 m at 20 °C, in lacquered softwood case.Condition: (3/-...
Brass Standard Meter, c. 1890In fruitwood case with maker's label: "Ed. Sprenger, Berlin Werkstätten für mathematische und optische Präcisions-In...
Group of Measuring and Surveying Instruments 1) 180° protractor with 2 sights, brass and steel,
Group of Measuring and Surveying Instruments1) 180° protractor with 2 sights, brass and steel, Germany, c. 1910. 2) Russian compass, brass, silve...
Large Current-Generating Dynamo, c. 1910 Probably by Max Kohl, Chemnitz. Cast iron, flywheel Ø
Large Current-Generating Dynamo, c. 1910Probably by Max Kohl, Chemnitz. Cast iron, flywheel Ø 15 ¾ in., overall size 24 x 10 5/8 x 17 1/3 in., wit...
29 Early Carbon Filament Bulbs, 1900 onwards 3 reflector lamps, marked "Lux", France, E27 base, 1
29 Early Carbon Filament Bulbs, 1900 onwards3 reflector lamps, marked "Lux", France, E27 base, 1 lamp with lateral fixed filaments, E27 base, 4 la...
Electric Motor and 2 Armature Models, c. 1910 1) DC motor, open construction, cast-metal housing,
Electric Motor and 2 Armature Models, c. 19101) DC motor, open construction, cast-metal housing, 3 belt drives, height 4 ¾ in. And: 2) 2 Leybold ...
2 Early Electric Motors Demonstration models, direct current, with belt pulleys, 1 x 70 V, 1 x
2 Early Electric MotorsDemonstration models, direct current, with belt pulleys, 1 x 70 V, 1 x approx. 30 V, height 6 and 8 ¼ in. Both motors work....
2 Power Generators Demonstration models, with lamps. 1) Handcrank-driven, horseshoe magnets, on
2 Power GeneratorsDemonstration models, with lamps. 1) Handcrank-driven, horseshoe magnets, on wooden base, 6 x 4 in. And: 2) Belt-driven, ring a...
Needle Galvanometer by Siemens & Halske, c. 1910 Berlin, no. 7353, original lacquered brass, Ø 5 ½
Needle Galvanometer by Siemens & Halske, c. 1910Berlin, no. 7353, original lacquered brass, Ø 5 ½ in., with plug-in bridge, in wooden case.Conditi...
3 Interesting Toy Electric Motors Metal housings, 48 volt, 1 motor by Märklin, with belt drive.
3 Interesting Toy Electric MotorsMetal housings, 48 volt, 1 motor by Märklin, with belt drive. Suitable for smaller applications, such as electric...
3 Small Electric Motors, c. 1920 Each with belt drives, on wood boards, 2 x with triple armature,
3 Small Electric Motors, c. 1920Each with belt drives, on wood boards, 2 x with triple armature, 1 x electromagnetic.Condition: (3/-)3 kleine Elek...
3 Interesting Electric Motors, c. 1920 All unmarked, metal housings, 48 volt, height up to 4 ¾
3 Interesting Electric Motors, c. 1920All unmarked, metal housings, 48 volt, height up to 4 ¾ in.Condition: (3+/-)3 interessante Elektromotoren, u...
Electric Motor Teaching and Experimental Set, 1915 France. With chrome-acid element, electromagnetic
Electric Motor Teaching and Experimental Set, 1915France. With chrome-acid element, electromagnetic motor, transmission and propulsion model, in o...
Eletromagnetic Motor with Geissler Tube, c. 1910 Height 10 5/8 in., for rotating Geissler tubes of
Eletromagnetic Motor with Geissler Tube, c. 1910Height 10 5/8 in., for rotating Geissler tubes of up to 8 ¼ in. length.Condition: (3/2)Elektromagn...
2 Early Electric Motors, c. 1895 1) Magnet armature, on wooden board 11 ¾ x 13 ¾ in. And: 2)
2 Early Electric Motors, c. 18951) Magnet armature, on wooden board 11 ¾ x 13 ¾ in. And: 2) Ring armature, brass frame, overall height 7 ½ in.Con...
Bright High-Wattage Light Bulbs, c. 1925110 Volt, including Edison Stereopticon 1000 Watt, Philips 500 Watt, Philips Onix and other bulbs.Conditio...
3 Small Electromagnetic Motors, c. 1910 All unsigned, approx. 4 volt, on wood boards, height up to 4
3 Small Electromagnetic Motors, c. 1910All unsigned, approx. 4 volt, on wood boards, height up to 4 in.Condition: (3/-)3 kleine elektromagnetische...
Cased Experimental Motor Set, c. 1910France. Containing 2 Leyden jars, induction coil, electromagnetic motor and Geissler tube.Condition: (3-/-)Ka...
Large Electric Motor on Heavy Iron Base, c. 1900 Ring armature, cast-brass frame, size of the
Large Electric Motor on Heavy Iron Base, c. 1900Ring armature, cast-brass frame, size of the motor 8 ¾ x 12 ½ x 11 in., height with base 38 ½ in.C...
Electromagnetic Motor with Geissler Tube, c. 1910 Height 6 ¾ in., for rotating Geissler tubes of
Electromagnetic Motor with Geissler Tube, c. 1910Height 6 ¾ in., for rotating Geissler tubes of up to 6 in. length.Condition: (3+/2-)Elektromagnet...
2 Early Electric Motors, c. 1910 For physical experiments. 1) Electromagnetic motor, for the
2 Early Electric Motors, c. 1910For physical experiments. 1) Electromagnetic motor, for the rotation of Geissler tubes, height 9 in. And: 2) Moto...
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512 Los(e)/Seite