Ginsberg Scientific Inc.

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US$15.40
This demonstration unit graphically illustrates the inertia of an object. Rest the plastic ball on top of the plexiglass square that is set on the vertical post. Release the spring and the square shoots out. The ball falls into the concave recession in the post, remaining at rest on top of the post as if nothing happened.
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US$15.18
The Fulcrum Holder is a metal support and cast iron base only. Dimensions: 3-3/4"" x 3-3/4" x 6-1/2".
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US$3.23
The Metal Balance Clamp slides on and locks to any meter stick. The removable stirrup can be used for suspension of weights.
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US$53.90
Contains all the necessary components to demonstrate the relationship between length of the lever arm, moment of force, and amount of force. When they adjust weights on the lever to establish equilibrium students will observe the law of torque and its properties. Consists of a 50cm meter stick, stand, three knife-edge clamps, one 50 gram hooked weight and one 100 gram hooked weight.
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US$15.02

This DC Motor Kit contains all the parts you need to build a DC Motor from scratch. Wind your own armature and field coil and build the commutator with two snap pieces. Includes detailed instructions manual. Excellent for classroom project.

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US$41.43
This is a hand vacuum pump supplied with a pressure gauge that reads in both centimeters and inches of mercury. Pumping rate is 15ml per stroke, and will displace up to 725 ml of air. Fitted with a valve to release the vacuum without disconnecting the pump.
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US$46.20
Constructed of heavy gauge aluminum to prevent corrosion and collapsing under a vacuum. Consists of a boiler, sample cup, tripod and two rubber stoppers with and without hole. The boiler is 100mm diameter x 170mm height, the stand measures 240mm in height. Requires a bunson burner or hot plate. (5" x 11-1/2" x 6").
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US$3.85
The Electroscope Foil Leaves are for any Electroscope. Pack of 12. (1/4" x 1").
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US$112.35
This kit can be used to demonstrate most of the principles of electricity. Supplied with an easily understood instruction manual. The kit contains the following: Voltmeter 0-1.5; 0-3v, Milliammeter 0-500 mA; 0-1000mA, Electroscope, Battery Kit, Mini Rheostat, Two Bar Magnets 2" in length, Compass Needle, Two Resistors, Mini Electromagnet, Horseshoe Magnet, Two Mini Contact Switches, Two Bulb Holders, Package of Iron Filings, Battery Holder D-Cell, Coil of Wire, Steel Rod Electromagnet, Acrylic Piece 19mm x 120mm, Two Plastic Rods 5mm x 120mm.
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US$392.00
This is perfect for classroom demonstrations of the effect a load has on a power source. The field of this magneto consists of a single Alnico magnet, which has a strong magnetic flux density. Capable of producing higher voltages then cobalt-steel magnets. The generator is mounted on 7 5/8" x 12" wood base with incandescent lamp and socket used as a load. Two binding posts are placed on the board for attaching other loads. Complete with instructions. (16" x 8" x 6"; 6Ibs).
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US$19.25

This kit is designed to teach permanent and electromagnetic demonstrations. This model of both an AC and DC motor is easy to assemble and disassemble.

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US$107.73

With the Alternating/Direct Current Generator you simply turn the handle and a current is produced that illuminates a lamp mounted on the generator base. Specially designed commutator switches between AC and DC current generation. Open construction allows visibility of all the parts. Magnet polarity marked "N" and "S" for easy reference. Can be removed and remounted with the opposite polarity. Binding posts allow external meters to be hooked up to generator. 

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US$18.72
This DC Hand Generator is a versatile generator and a perfect power supply for many experiments. This pistol grip style handle generator can be utilized with almost any experiment requiring up to 12-volt DC current. Housed in tough clear plastic.
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US$73.99
Four stroke operation is demonstrated by the gear driven timing mechanisms, valves, ignition, systems and more. DC power input is available to power a lamp which represents the spark or glow plug ignition. Made from high density plastic that will withstand continual use.
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US$122.43
The open front spring clips make it much easier to remove the test tubes while the tubes remain submerged. The test tubes have been graduated for a clear measurement of the volume of gas generated. The black acrylic background aids in viewing the water level while supporting the test tubes. The binding posts have been reposititioned for easy access and greater safety. The unit measures 140mm x 203mm x 38mm. Instructions included.
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