Hexagonal Hollow Stopper with Flat End, 14/23, Borosilicate Glass Size_12 Inch the wider square-face proportions handling

the wider square-face proportions handling broader incident beams in dispersion and refraction demonstrations

25 inches tall supports glassware over Bunsen burners for bench heating

Plastic-bodied wave apparatus with eccentric discs that drive metal rods up and down as the handle turns

The interchangeable 29/32 stopper fits the 1

this apparatus pairs two 8-inch polarizing filters in a wooden frame with four acrylic shapes that show photoelastic patterns when squeezed

Hexagonal Hollow Stopper with Flat End, 14/23, Borosilicate Glass Size_12 Inch the wider square-face proportions handlingHexagonal hollow stopper in heavy duty borosilicate glass features 14 23 cone with flat end for sealing ground joint vessels and apparatus.