US$ 34.99
Three-wheel parallel pulley in a metal frame with accurately-centered 50mm aluminum wheels
and 2 quadruple pulleys on a heavy composite base with capstan
Three-step differential pulley with 30mm
Ten-ohm 5W wire-wound fixed resistor in a self-contained ABS module with 4mm sockets
Stainless Steel Universal Mirror Physics Three-wheel parallel pulley in aDual surface stainless steel universal mirror at 3. 5 by 0. 75 inches with one flat and one curved face, paired sides letting students compare plane and convex reflection in a single tool.
US$ 34.99
US$ 49.99
US$ 75.00