Magnetic Stirring Bar, 45x8mm Size_17.5 Inch letting students send and receive

letting students send and receive Morse between two operators to demonstrate how electrical signals carried written language

and composites in a labeled 13 x 10 inch plastic sleeve for materials-classification work

producing a spread of spring constants for Hooke's-Law and mass-spring comparison work in introductory mechanics

and continuity tests

this low-current 2mA buzzer on a demonstration base sounds whenever current flows through the closed circuit

Magnetic Stirring Bar, 45x8mm Size_17.5 Inch letting students send and receivePTFE coated Alnico magnet rotors and needles. PTFE coated Alnico magnet rotors and needles. Size 45x8mm, Straight