11-Piece Rectangular Retort Stand Set with Bossheads, Clamps, and Rings Biology_Microscopy suspending thermometers above hot plates

suspending thermometers above hot plates or fixing specimens in orientation

fitting 20 mm tubes below and 26 mm tubes above for tall tubes and stirrers

where current through a coil closes a separate contact and shows how a small signal controls a larger circuit

Clear-case Bourdon gauge with a 3

each structure individually labeled for plate-tectonics units

11-Piece Rectangular Retort Stand Set with Bossheads, Clamps, and Rings Biology_Microscopy suspending thermometers above hot platesEleven piece retort stand starter set combining a heavy duty rectangular base and rod with three support rings, three boss heads, and four vinyl coated clamps for complete apparatus assembly.