US$ 74.50
Wider-apex 40° x 40° x 100° glass prism
perforated at 1cm intervals along 12 axes with six moveable pins for torque and rotational-energy investigations
5% accuracy in a fully enclosed plastic case
sized for classroom balance experiments and physics mass demonstrations
5 Pa Bourdon gauge on a powder-coated metal base for whole-class visibility
Earthquake Teaching Model Length_50mm Wider-apex 40° x 40° xDepicts fault origins, seismic wave propagation, and surface effects on a hand painted wall mountable backboard, each wave type individually labeled for geophysics reference.