Double Parallel Pulley with 2" Wheels Item Type_Dissection Equipment Hand-cranked cam turning against both

Hand-cranked cam turning against both a straight follower and a lever follower

One hundred numbered slots in a hardwood storage box hold standard microscope slides for ordered reference and classroom slide-library organization

proof plane

letting students read both small-cell and battery-stack voltages on a single instrument

Single-channel aluminum 1-meter bench with engraved graduations and leveling-screw feet

Double Parallel Pulley with 2" Wheels Item Type_Dissection Equipment Hand-cranked cam turning against bothAluminum bodied double parallel pulley with two 2 inch wheels in a heavy duty 4. 25 inch metal frame and end hooks, demonstrating compound pulley mechanical advantage in paired configuration.