A versatile, mobile digital Magnifier/Microscope, ideal for classroom/fieldwork observations.
The unit has variable magnification from x24 to x90 and may be connected , via USB, to a computer to save images or simply observe what is happening on a bigger screen.
Adjustable focus, three LED light levels and switchable image (normal, greyscale, enhanced colour, enhanced surface view and split screen).
Operates using three rechargeable AAA cells which are automatically recharged when the USB lead is connected to the computer.
May be used as a free standing magnifier in the field and saved images may be downloaded later to a computer.
Images are saved as JPEG files which can be read by most programs. Images are easily imported into word processors.
Comes complete with power adaptor, mini USB cable, wrist strap, anti-slide pads, software disc with manual, cleaning cloth and 3, AAA Ni-MH rechargeable cells.
Digital Magnifier £99.00
Demonstration Colour Mixing Apparatus
Following the success of our small colour mixing apparatus, we were asked to design something that could be used by teachers for demonstrations.
The kit comprises, essentially, a scaled up version of our small colour mixing apparatus. An upright case contains three, high power, accurately colour matched leds, each of which has infinitely adjustable brightness. Also supplied is a large, free standing, primary colour shadow mask, a hand held secondary colour mask and a 12V plug top power supply.
The system allows the teacher to project large primary and secondary colour mixing disks onto any vertical surface and to adjust the colour saturation to mix virtually any colour (How do you produce brown?). Unlike other systems the purity of the resulting white is outstanding.
The unit is extremely easy to use, is easily transportable and comes with full instructions. The only other requirements are a white wall and a darkened/blacked out room.
The system may be used to demonstrate both secondary and primary colour mixing, colour shadows and colour reflection/absorption.
Demonstration Colour Mixing Apparatus with plug top PSU £63.00
1.5-30V @ 1A dc Regulated Power Supply with digital metering
The unit is a compact, lightweight bench-top power supply in a stylish enclosure. Designed as an affordable yet highly functional piece of lab equipment, connection to the power supply is via standard pitch (19mm) 4mm sockets. The continuously adjustable output voltage can be set to within 0.1V, using the adjustment dial on the front of the unit and the current may be read to a resolution of 0.01A. Overvoltage/current and short circuit protection. A large backlit LCD displays the output voltage and the current being drawn. The PSU measures only 135 x 140 x 53mm (5.3" x 5.5" x 2.1") and can be tilted to adjust the viewing angle of the display.
1.5-30V, 1A PSU £69.00
ERIC-Electrical Resistance Indicator for the Classroom
A self contained resource to aid understanding of electrical resistance
An extremely versatile kit for teaching about electrical resistance. Draw a pencil line across ERIC, study the LED brightness. Then make the line thicker. What happens? Draw a second line in parallel. Change the length of the lines. Can be used to compare conductors and insulators including the entire class!
Comes with all the kit shown above and a comprehensive set of instructions.
ERIC £12.00