US$ 34.90
with both 4mm stackable sockets and screw terminals so leads wire in without an adapter to either bench standard
conductors
this resistance box at plus-or-minus 1% on each step replaces dozens of fixed resistors at the bench
Optically-worked glass double convex lens with a 200mm focal length and 1
Frosted Glass Gas Jar Cover, 3.9 inch, 1.7mm Thick Physics_Mechanics with both 4mm stackable socketsFrosted glass gas jar cover measures 3. 9 inches with 1. 7mm thickness for sealing gas jars during collection and demonstration procedures.
US$ 34.90
US$ 38.00
US$ 15.00
US$ 68.00
US$ 39.95
US$ 109.95
US$ 29.95