Test Tube with Side Arm, 125 x 16mm, Borosilicate Glass Entomology & Zoology_Entomology Supplies this 4-inch catch bucket with

this 4-inch catch bucket with handle collects water displaced by submerged objects

demonstrating how a crane lifts loads through the mechanical advantage of a large wheel turning a small axle

Glass semicircular block at 100 by 18mm

each bulb filled through a top funnel for direct comparison

Permanent-magnet stack inside an 8 x 5 inch base recharges weakened bar and horseshoe magnets by realigning their domains - no electrical power

Test Tube with Side Arm, 125 x 16mm, Borosilicate Glass Entomology & Zoology_Entomology Supplies this 4-inch catch bucket withTest tube with side arm in borosilicate glass measures 125 x 16mm for gas collection, distillation, and vacuum filtration applications.