Cam with Straight and Lever Followers Demonstration Set Plastic Labware_Plastic Burettes heating the bar until it

heating the bar until it no longer passes through the opening and contraction returns it

Hand-painted fracture-and-fault model demonstrating normal

Triple tandem plastic pulley with 25/38/50mm ball-bearing wheels on an open-sided 17

setting UV sanitization cycle duration and restoring full cabinet function when the original switch fails under classroom use

Cam with Straight and Lever Followers Demonstration Set Plastic Labware_Plastic Burettes heating the bar until itHand cranked cam turning against both a straight follower and a lever follower, showing how cam profiles convert rotation into timed linear or oscillatory follower motion.