Lab Quality Magnifying Glass, 2.25x, 2.5" Diameter Pack Size_50 each 20mm on edge with

each 20mm on edge with a top hook for suspending in water during Archimedes-principle and buoyancy experiments

the lower-friction variant of the metal-bearing bench-clamp pulley in the series

firing a 19mm ball up to 10 feet with less than 1cm scatter

supporting skeletal anatomy teaching in health coursework

High-level peroxide test strips in a 50-strip vial calibrated at 0

Lab Quality Magnifying Glass, 2.25x, 2.5" Diameter Pack Size_50 each 20mm on edge withLab quality 2. 5 inch magnifying glass at 2. 25x with a 5. 87 inch focal length, the optical glass producing undistorted views of specimens, fine print, and inspection details.