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 .
The circumference ration demonstration consists of a 100mm diameter circular wheel and a scale below the tray.
Plastic, φ200?, divided into circle area calculation formula and the calculation formula of PI two parts.
The circle area demonstration consists of a 200mm diameter and it is divided into 17 equal parts.
The Complete A/C Diagnostic Tool
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Products used to explore the distance between different stars and model size, equipped with observation, explore the year, different seasons, different periods of constellation arrangement. This instrument is mainly used for nine students to explore the planets of the solar system, according to the distance from the sun, they are Mercury, Venus, earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.
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The Engine Ignition Demonstration Device
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It is modular structure, and each part is placed in a special wooden box. This instrument is mainly used to do the experiments of the conversion between the mechanical energy, wind energy, electricity, light and heat.
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It is used for pupil to explore the formation of wind, consists of base, transparent cylinder and aluminum blower fan.
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Dimension (L*W*H CM): φ24.5
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Features:
Determination of the gauge factor of strain gauges
Measurement of deflection and strain
Strain gauge application:
2 straingauges on the top and underside of the bar respectively
Full bridge,350 Ohm
Measuringrange: ±2mV/V
Resolution:1µV/V
20mm
Graduation:0,01mm
Zero balancing adjustment range: ±1mV
Supplyvoltage: 10VDC.
It consists of six kinds of geometry-shape of the metal thread.
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Dimension (L*W*H CM): 7.5*3.5*2.5
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It consists of 38 pieces rectangular projection plank, and each projection plank is printed chemical experiment device schematic plan with different figure, and its length is 6mm.
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Dimension (L*W*H CM): φ6.5
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Plastic, each block is monochrome.
Size:10*10*10mm, mutual connection, 5 colors, 20 pcs for each color.
The pressure spring is made from 1.5mm diameter carbon spring steel wire with flat ends. Length: 70mm, diameter: 20mm.
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The Real-time PCR Flex System
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The Senior and Junior Math Magnetic AIDS
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It is used to explain that converts solar energy into electrical energy. It consists of solar energy panel, miniature motor (with blower fan), buzzer and connecting plate.
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The product is mainly composed of a demonstration board 1 sets, 5 sets of electrolyzer, lamp etc. Products use the power supply voltage: 4V ~ 6V. The demonstration board seat is made of ABS engineering plastic, which is provided with a socket 5 and socket, wiring terminal, wiring diagram printed on the demonstration panel, a demonstration board seat size 360 x 140 x 260mm; electrolytic cell by a transparent box, a box cover and a connecting wire electrode, etc.
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