US$ 80.00
and logic-circuit demonstrations
with lengths varying by density to isolate the mass-volume-density relationship for student investigation
sized for short-pitch breadboard wiring where stackable plugs let multiple leads share a single terminal
accepting rods up to 19 mm in diameter for larger retort stand assemblies
Rotary-knob resistance substitution board offering twelve discrete values from 33 ohms to 10M ohms with 4mm lead connections
Glass measure spare Material_Hardwood and logic-circuit demonstrationsBorosilicate Glass Glass measure spare
US$ 80.00
US$ 107.25
US$ 69.50
US$ 99.50