US$ 47.99
Class-visible 12-inch demonstration meter with magnetically damped moving coil and Perspex front-and-back panels
card screen
overhead spring
01 mm across a 0 to 165 mm scale
Concave Glass Mirror, 75mm Diameter, 150mm Focal Length Pack Size_14 Class-visible 12-inch demonstration meter withConcave glass mirror at 75mm diameter and 150mm focal length on a ~3mm thick blank, the f 2 geometry balancing throw and magnification in introductory reflector optics.
US$ 47.99
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