Replacement Rider for LED Ray Box, 60 x 50mm Lab Equipment_Sterilization Equipment 2 triple-tandems

2 triple-tandems

eliminating cord-threading during setup in compound-pulley experiments

4 GHz bidirectional RF clicker pairs students and educators with a private help-request feature for discreet in-class support

this object screen provides a stable projection surface for ray diagrams and lens investigations in physics coursework

and three low-friction nylon wheels for straight-line momentum experiments

Replacement Rider for LED Ray Box, 60 x 50mm Lab Equipment_Sterilization Equipment 2 triple-tandemsMetal rider measuring 60 x 50mm, dimensioned as the matched replacement carriage for the LED ray box (PH0602ALED) track when an original rider is lost or damaged.