US$ 26.99
Wooden storage box 3
suited to bench-scale magnetism work where space is tight or where weaker field strength is required
closing the circuit only while the button is held to introduce momentary-contact behavior alongside latched switches
overhead spring
card screen
Concave Glass Mirror, 75mm Diameter, 150mm Focal Length Pack Size_14 Wooden storage box 3Concave 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$ 26.99
US$ 39.31
US$ 16.95
US$ 173.50
US$ 110.50
US$ 172.99