Triode Valve Mounted Lab Equipment and Supplies_Plastic Labware this low-current 2mA buzzer on

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

dropping a chosen capacitor into a circuit without unsoldering during introductory RC-circuit and resonance investigations at the bench

showing how cam profiles convert rotation into timed linear or oscillatory follower motion

5cm and field strength from 100 to 7500 Gauss across the working volume

Pack of 100 microhematocrit capillary tubes measures 100mm with 1

Triode Valve Mounted Lab Equipment and Supplies_Plastic Labware this low-current 2mA buzzer onMounted on transparent base, with 4 mm colour coded sockets. Mounted on transparent base, with 4 mm colour coded sockets, with circuit diagram printed for demonstration.