3-Prong Double-Adjustable Universal Clamp with Vinyl Grip and Swivel Boss, 21mm Rod Item Type_Density Cubes & Cylinders Borosilicate glass 90cm barometer tube

Borosilicate glass 90cm barometer tube with a 3-4mm bore

Alternate seven-piece electrostatics kit for Van de Graaff and Wimshurst generators

dimensioned to drop into the PH0652 optical bench for hands-on study of Malus's law and crossed-polaroid extinction

producing more sinusoidal oscillation than a standard helical spring for SHM studies

Heavy-duty die-cast alloy boss head with a painted gray finish and two adjustable thumbscrews

3-Prong Double-Adjustable Universal Clamp with Vinyl Grip and Swivel Boss, 21mm Rod Item Type_Density Cubes & Cylinders Borosilicate glass 90cm barometer tubeThree prong double adjustable universal clamp with non slip vinyl grips and a swivel bosshead accepting rods up to 21 mm, securing large diameter glassware on retort stands.