Sammlerobjekte Auktionen

Bechstein grand piano in a black stained case, serial number 88702, built in 1908, 210 cm long, 149 cm wide with matching jug

2-part mirror in richly decorated gold-coloured frame with ears of corn and ornaments on top and garlands, rosettes with leaves, ca. 1800, 177 cm ...

Mahogany veneer play table with green felt inlaid top and standing on twisted legs, 75 cm high, 78x39 cm, unfolded 78x79 cm

Mahogany veneer slatted tea stove with copper inner tray and mount, on block base, Empire period ca. 1800, 51 cm high, 30.5x30.5 cm, with copper k...

Oak Neo-Renaissance scale model cabinet standing on black ball feet, 19th century, 95 cm high, 84 cm wide, 38 cm deep

Mahogany veneer on oak folding buffet with decorative frame, flutes and rosettes, Holland early 19th century, unfolded 145 cm high, 218.5 cm wide ...

Oak cushion cabinet with stitchwork and blackened ornaments, standing on ball legs, after an antique model, 20th century, 174 cm high, 156 cm wide...

Faceted mirror in contoured oak frame with studded crest, 92x88 cm

Walnut revolving book mill, 68 cm high, 42x42 cm

Mahogany veneer play table with green felt inlaid top, standing on twisted legs, 77 cm high, 84 cm wide, 42 cm deep, unfolded 84 cm wide, 84 cm de...

Blackened pinewood 3-shelf (music) stand with decorative raised edge on the top, a sheep picture of Beethoven, 106 cm high, 60 cm wide, 30 cm deep

Walnut smoking table, standing on 3-sprant, 68 cm high, 44x44 cm

Oak 2-door cabinet with drawer, approx. 1880, 199 cm high, 142 cm wide, 53 cm deep (part of the back wall is missing and part has been replaced)

3-piece clock set consisting of a marble clock, 33 cm high, with a marble coupe on both sides

W Gleuns jr. 1808-1881 mundomotorium. Explanation of the following apparatus principles: The tellurium, the lunarium, the planetarium and the come...

Tellurium. Shows the lunar phases within the seasons. Tellurim probably built between 1875-1900. (German market) Company Ernst Schotte&Co. Diamete...

Tellurium. Shows the lunar phases within the seasons. The tellurium was probably built between 1875-1900, with globe. Diameter 12 cm. With inscrip...

Bohnen-Berger apparatus. Explanation of the law that makes the earth rotate. Globe that is gyroscopically suspended. It can be set in motion with ...

Moving Coil Galvanometer. Measuring Voltage. Moving coil, galvanometer to Ayrton-Mather, 27 cm high

Electrometer. Demonstration of electric charge. An aluminum needle moves along the scale division by charge. Voltages can be measured from 0 to 10...

Mirror galvanometer (Siemens and Halske). Accurate measurement of current. Professional mirror galvanometer. (no. 3024640, approx. 1900, 1000 ohm)...

Sled inductor, Dirk Barend Kagenaar, 1842-1924. Producing variable induction current. Sled inductor after a design by Kagenaar. He was amenuensis ...

Balance Galvanometer. Measuring direct current. Balance or vertical galvanoscope for induction and thermoelectric experiments, 40 cm high

Mirror galvanometer demonstration. Shows the operation of a mirror galvanometer, 22 cm high

Milli-Amperemeter. Ammeter (current pressure) D.R.G.M. Milli-galvanometer with scale from 0 to 20 milli-Ampere, 14 cm wide

School Moving Coil Galvanometer (Griffin). Measuring direct current. Designed so that the hood can be easily removed to look inside at coils and m...

Balance. Galvanometer measuring direct current. Large, tripod-mounted (direct current) electrometer with adjustable coil, 38 cm high

DC motor. Model of a DC motor. Model of a single-phase DC motor equipped with oil-bronze bearings. (sliding bearings), 22 cm high

Hot wire meter. For measuring milliamps. Works on the basis of a thin wire that expands in length as a result of temperature increase. The pointer...

Electric motor Ritchie 1833. Model of the electric motor. Based on attraction and repulsion of poles on a fixed horseshoe and also a movable elect...

Alternating current transformer. Lucien Gaulard edition 8 Feb. 1884. Model of a separated alternating current transformer, 22 cm high

Nicola Tesla, 1856-1943. Three-phase motor. Demonstration model three-phase motor. (Tesla motor) For supply of approx. two volts with six winding ...

Rotating field apparatus. Demonstrating how magnetic fields behave within windings. Three-phase coil with magnetic needle. Apparatus for demonstra...

Werner Siemens, 1816-1892. Electric motor with T-armature. Explanation of motor with T-armature. Electric motor with Siemens double T-armature. In...

Resistance bank. Creating resistances in circuits. Resistance bank using wire coils with values of 1, 2, 3, 4 and 10 Ohm, 20 cm high

Series resistance block. Resistance device in circuit. Resistance bank by means of wire coils. 0.1, 0.2, 0.3, 0.4. Ohm, 20 cm wide

Gold balance. Weighing small quantities. Gold scale with micro weights, 29 cm high

Worm gear. Demonstrating force times load. Retarding force is transferred perpendicular to the gear via worm gear, 23 cm high, 15 cm wide, 22 cm d...

Safety valve. Safety valve to prevent overpressure. Steam valve that shuts off the pressure up to a certain point and then releases it. By shiftin...

Diaphragm valve. Visualize how a valve works. If the pressure becomes too high, the piston moves up and relieves itself, 16 cm high

Balance apparatus. Balance at the same weight. Balance apparatus with adjustable weights, 30 cm high, 33 cm wide

Wedge device. Demonstrating forces at splitting angle. By using different wedge angles, it can be shown that more force is needed at 30 degrees th...

Gravity apparatus. Demonstration of downward attraction (Plumb). The line of the ball always hangs vertically to the background triangle, 25 cm hi...

Bascule. Mechanical weigher. Also called Quintens Balance. Works on the principle of a lever; Force times arm, 26 cm high, 28 cm wide, 13 cm deep

Quick thermometer. Temperature thermometer. Indicates temperature from zero to sixty-two degrees, 60 cm long

Normal differential thermometer - Beckmann. Comparison thermometer. Precision thermometer from 0 to 5 degrees, 32 cm high

Cardan differential. Showing mechanical transmission. A mechanical construction, in which the bevel gear rotates at different speeds, 15 cm high

Lever on tripod. Demonstration of principles: Force times arm. Lever to balance unequal forces, 30 cm high, 40 cm wide

Micrometer. Measuring accurate thicknesses. The pitch is 1 mm., so if the handle is turned one turn, the thickness between the pins is also 1 mm, ...

Parallelogram apparatus. Demonstration of pendulum laws. Apparatus for demonstrating Parallel forces and pendulum law, 15 cm long

Hydrostatic Balance. Demonstration of Archimedes' Law. Balance for measuring upward pressure in a body immersed in liquid. Apparent weight loss = ...

Spherometer. Purpose is to measure the sphericity of lenses. Three legs with pointed points form an equilateral triangle and are placed over the l...

Inertia wheel (Maxwell), Demonstration of conservation of work capacity. The disk that rolls itself up again under its own weight, 66 cm high

Compensation pendulum. Demonstration of the expansion of metals. The pendulum remains the same length, because the expansion of the rods, iron and...

Percussion frame. Effect of pulsating balls. Demonstrating the force that is created when balls collide with each other, e.g. one or two, 57 cm hi...

Wind-axis. Transferring power by little work. By lightly driving a small gear on a larger one, one can handle a heavy load, 20 cm high

Weights. For use with scales. Weights in a mahogany cabinet for use with the Analytical Balance scale. (Becker & Sons Rotterdam), 12 cm high

Plani-meter. Measuring instrument for measuring surface area. Instrument to calculate the surface area and perimeter of e.g. a map or atlas, 22 cm...

Weights. Weights with hooks (hanging weights). Hanging weights on wooden platform, 25 cm wide

Gyroscope. Device for visualizing earth oscillations. A rotating flywheel that works like a spinning top and serves to keep unstable objects in ba...