3" ABS Pulley with 50mm Ball Bearing and Thumbscrew prop65 Four 153 x 76mm plates

Four 153 x 76mm plates - each holding 98 iron-rod plotting compasses in a 14 x 7 matrix - assemble flat or as the faces of a cube to display 2D and 3D field-line patterns

Designed for use in professional laboratories

sized for breadboarded circuits where the standard 4mm patch wires would overrun the apparatus footprint

Two-ohm metal-film resistance unit at plus-or-minus 1% accuracy with a 1

3" ABS Pulley with 50mm Ball Bearing and Thumbscrew prop65 Four 153 x 76mm platesABS plastic pulley with a 50mm ball bearing wheel, a thumbscrew clamp for rod attachment, and an 18mm attachment diameter for pulling small weights in mechanical advantage experiments.