US$ 325.00
Wooden fulcrum-balance simple-machine model with a sliding pivot
Suspends a 20mm solid brass cube from spring scales for Archimedes'-principle and buoyancy measurement
line-focus
sized for general-purpose coil winding and electromagnet construction at the workhorse gauge of the line
Round Convex Glass Mirror, 75mm Diameter, 200mm Focal Length Material_Steel Wooden fulcrum-balance simple-machine model withConvex glass mirror at 75mm diameter and 200mm focal length, ~3. 1mm thick, the longer focal value softening divergence and producing a wider apparent field through reduced virtual reflections.
US$ 325.00
US$ 49.00
US$ 265.00
US$ 49.00
US$ 850.00
US$ 46.85