Zoetrope (Demonstration Model)

Zoetrope (Demonstration Model) Home-built large demonstration zoetrope, wooden base, drum Ø 11 ¾ in., crank drive, with 5 strips. Zoetrope (Demonstrations-Modell) Großes Demonstrations-Zoetrope aus

Collection of Physical Demonstration Models and Technical Devices 1) Carbon arc lamp, demonstration model by John Browning, London, original lacquered brass, 2 graphite electrodes, one height-adjustab

4 Spoked-Wheel Calculating Machines and a Demonstration Model 1) Rema I, 1914 onwards, Braunschweiger Rechen­maschinenfabrik Rema GmbH, serial no. 4340, with 9, 8 and 13 digits, with wood base an

Tesla Coil Demonstration Model, c. 1915 With label: "Elektro Vulkan, Kromeriz", circular wood base, inner coil on porcelain isolator, outer coil on 3 glass columns, height 15 ¾ in., Ø 10 1/5 in.,

Bell Telephone Demonstration Model, c. 1900 Manufacturer: E. Leybold's Nachfolger, Coeln-Rhein. Open-works telephone model for demonstrating the mechanism, on mahogany base, very good original condit

Electrophysical Demonstration Model, c. 1890 France, marked "HRFA", mahogany, thick-walled glass container (fixed to the base), 6 electric connections, 2 coils, 2 electrodes inside of the glass, one s

Demonstration Model of the Single-Cylinder Steam Engine "Lady Margaret" Hand-cranked museum model, polished steel, brass and cast metal, mahogany-lagged cylinder Ø 3 1/5 in., crosshead guide in l

Demonstration Model of an Early Electric Motor, 1890 To demonstrate the windings of an armature, on turned wood base, height 15 in. Demonstrationsmodell eines frühen Elektromotors, 1890 Zur Darst

6 Typewriters Keyboard Demonstration Models 1) Torpedo, wall-mounted model, with indication of the angle degree in 4 steps. - 2) 3 x Adler, table models, with key, lever and platen, 2 different models

Countertop teaching tool. Works all the way. Made by Hohm. Measures 15" tall.

4 Demonstration Model Electric Motors, c. 1910 Various models and constructions, height up to 7 in., untested. 4 Demonstrationsmodelle Elektromotoren, um 1910 Unterschiedliche Bauformen und Konstru

English Telegraph Demonstration Model, 1902 Dated 1902; consisting of key, relay and sounder; on mahogany stained base, size 13 x 7 in. An excellent exhibition item. Englisches Telegraphen-Demonstrati

6 Typewriter Keyboard Demonstration Models Official factory models. 1) Mercedes, table model, with key and lever. - 2) Erika, Seidel & Naumann, table model, with key and lever. - 3) Triumph, table mod

A Painted Metal Piston Generator Demonstration Model Second Half 20th Century Property from a Midwest Collector

Demonstration Model of an Early Carbon Grain Microphone, c. 1900 With series resistor and switch, wood base stamped with no. 188937. Demonstrationsmodell eines frühen Kohle-körnermikrophons,

3 American Steam-Engine Demonstration Models, c. 1910 1) Cast-iron model of a railroad locomotive engine, reversible, with Stephenson steering, hand-cranked, width 18 ¼ in. - 2) Steam motor, cas

4 Typewriter Keyboard Demonstration Models 1) Torpedo 6, table model, type-lever mechanism, with four angle indicators, back with description, official factory model. - 2) Wall model "Wagenaufzug" to

5 Typewriter Demonstration Models 1) Olympia, electric, partial cutaway model, with motor, carriage and parts of the mechanism. - 2) Adler, working model with 5 keys, tabulator and keys for the carria

Demonstration Model AEG Hand Drill, c. 1950 Model UHB10, transparent plastic body, bakelite, in oak case, pressure switch on the front (defective), 23 3/5 x 13 ¾ in. Demonstrationsmodell AEG-Ha

Static Charge Demonstration Model Nickeled brass tube on isolating glass rod, with 6 elder-marrow balls on strings, height 14 ½ in. Modell zur Demonstration statischer Ladungen Vernickelte Messingrö

Continental Typewriter Demonstration Model, c. 1935 Official model of Wanderer-Werke, Siegmar-Schönau, no. P072545, for demonstrating all functions of a typewriter, carriage movement defective, o

A Hills McAnna Oiler Demonstration Model Late 19th/Early 20th Century raised on a wood base. Height overall 20 1/2 x width 16 1/2 inches.  Property from a Midwest Collector

Group of Physical Demonstration Models, c. 1900 1) Wimshurst's influence machine, Trüb, Fierz & Cie., Zurich, height 14 ½ in., complete, rubber straps need to be renewed. - 2) 8 chromic acid

2 Physical Demonstration Models with 9 Geissler Tubes, c. 1910 1) Stand with turning star and 3 tubes with uranium spirals. – And: 2) Isolated stand with 6 tubes of different shape and color, 2 of t