1.5m Metal Optical Bench Mechanics_Kinematics 2A with constantan winding on

2A with constantan winding on a vitreous-enameled steel tube and a nickel-plated phosphor-bronze sliding contact

6oz each in a 4-pack for chemistry-themed home entertaining and science enthusiast gifting

portable enough for mobile demonstrations of current-driven magnetic field strength

Lead-free five-cylinder equal-mass set at 30g each in zinc

Nickel-plated T-pins provide secure specimen pinning with broad heads for stable dissection board mounting in biology laboratories

1.5m Metal Optical Bench Mechanics_Kinematics 2A with constantan winding onV location formed by two hexagonal bars and a hexagonal carriage prevents sag along this 1. 5 meter precision optical bench, with a single point central support stabilizing the rail.