Aluminum Wire Testing Clamps with Wing Nuts Microscopy_Microscopes & Accessories Pink-dotted ends and steel keepers

Pink-dotted ends and steel keepers across this 50 x 12mm Alnico cylinder pair simplify pole identification while the keepers preserve field strength during cardboard-box storage

the universal gate from which any other Boolean function can be built in digital-electronics work

Universal 2-input NAND gate module with red/green LED outputs and a printed truth table

the standard configuration for keeping the field intact between classroom magnetism sessions

sized for hands-on demonstrations of series-circuit current and voltage division

Aluminum Wire Testing Clamps with Wing Nuts Microscopy_Microscopes & Accessories Pink-dotted ends and steel keepersAluminum wire testing clamp pair with wing nut and washer fixings, sized for fine ductile materials including nylon, copper to 30 SWG, and human hair at loads up to 10kg.