US$ 230.74
Wooden fulcrum-balance simple-machine model with a sliding pivot
Compass mounted parallel to a current-carrying coil deflects against Earth's horizontal field
Decade capacitance box stepping 0
this Hall's car supports dynamics work on inclined planes with weights and pulleys
30m Fiberglass Tape Measure with PVC Cover, Metric and Imperial LabLearner Wooden fulcrum-balance simple-machine model withDual metric and imperial markings on this PVC coated fiberglass thirty meter tape measure, housed in a vinyl covered zinc steel case with a fold out winding handle for field work.
US$ 230.74
US$ 147.50
US$ 11.95
US$ 53.99
US$ 215.59