Dully Hardened & Tempered. Heavy Duty
....-lab-344333951.jpg "JUNIOR HACKSAW(PLASTIC)")
JUNIOR HACKSAW(PLASTIC)
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Brass sheet, matches, candles, scissors, solder, carbon rods, wires, light bulbs, batteries, bulbs, wood, sand etc..
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The product is a magnetic absorption electrical demonstration experiment. Component module on the front screen printed circuit symbols and values, closed module bottom using transparent plastic production, visible internal components, equipment components should include: a digital ammeter, the range is not less than 5A, precision 0.01A, a digital voltmeter is not less than 20V, precision 0.1V, battery box two groups, the maximum series Combined 12V, three lamp holder and light bulb (4 3.8V/6V each), single knife and double throw switch two, single knife switch three, resistance 5 Omega /5W, 15 Omega /5W, 20 Omega /5W each, 10 Omega /5W two, connection cylinder six, sliding rheostat 20 /2A one, nickel chrome wire, copper wire, wire each 2 meters, connecting wire not less than 40 root, digital current The meter and voltmeter are displayed with high brightness digital tube. The bottom of all parts is composed of magnetic absorption independent component module. The modules can be directly adsorbed on the blackboard at the time of experiment. It has greater visibility, strong three-dimensional sense and convenient teaching demonstration experiment. The module should be placed in the hand-held plastic box for convenience. The size is not less than 0.8 inches. The size of each module is not less than 85mm*35mm*35mm.
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Junior High School Mechanics Experiment Box
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It is maily used for the following experiments: The rectilinear propagation of light, pinhole, light reverse, refraction, convex imaging etc.
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This instrument is an adjustable DC stabilized source, with standard voltage: 1.5V-9V six grades, rated output current: 1.5A, voltage stability: each grade less than 350mV, current stability: each grade less than 350mA, ripple voltage: each grade less than 15mV, over-current protection, current limiting in the range of 1.8A~2.4A.
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The circumference ratio demonstration consists of a circle wheel (100mm diameter) and a scale below the tray.
The circle area demonstration consists of a 200mm diameter circle divided into 16 equal parts of the fan-shaped small pieces, and each one be divided into two small pieces.
Junior Middle School Teaching Power
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Junior Scene Demonstrator
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It is used to combined demonstrate more than twenty basic experiment of junior school mechanics.
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The calorific value is obtained by utilizing a heat exchanger where the products of combustion are cooled by a measured flow of water. Junkers Boys Calorimeter apparatus allows for the accurate determination of the calorific value of the main fuel gases which are used in the industry, such as butane, propane and methane. The system is supplied with manuals which describe all parts of the trainer, the installation and utilization procedures, as well as some exercises with the relative results. The burner is supplied with a complete set of interchangeable nozzles for the different types of gases.
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