4-Prong Cork-Lined Retort Clamp with Boss Head, 90mm Capacity Lab Supplies_Lab Burner Accessories hand-cranked so students trace how

hand-cranked so students trace how shifter engagement alters gear ratios and output torque selection

Aluminum-handled collecting net swings lightweight through tall grass and air sweeps for classroom field trips and introductory entomology sampling work

this 20mm-diameter steel helix carries longitudinal

Thirty-two-inch advanced pulley demonstration set with 8 singles

Spanning C (256 Hz) through C (512 Hz) in scientific pitch

4-Prong Cork-Lined Retort Clamp with Boss Head, 90mm Capacity Lab Supplies_Lab Burner Accessories hand-cranked so students trace howFour prong cork lined retort clamp with an integrated boss head, gripping objects up to 90 mm and mounting to support rods up to 15 mm for chemistry and physics setups.