SW-1703 - ESAW Bell jar and Vacuum Pump Set A simple, innovative kit allows you to perform a number of experiments on the vacuum and air pressure. The kit clearly demonstrates the method by which a pump works. Also illustrates that air has mass and helps find its mass and density. Explain the eff...

SW-1749 - ESAW Vacuum or Pressure Apparatus Vacuum or pressure, the apparatus is a hand-operated device. It consists of a metal barrel with a piston and two nozzles for vacuum and pressure respectively. Can be used with vacuum plate PH36017

SW-1758 - ESAW Bell In Bell jar An electric bell 3-6 volts ac/dc suspended in a bell jar, fitted with rubber bung and connector terminals.

SW-1767 - ESAW Wire Helix To illustrate wave motion. Flat section steel wire in the helical coil.

SW-1776 - ESAW Plastic SlinkyEasier to handle as it does not tangle. Size 63 mm diam. x 65 mm length.

ESAW Power Supply Unit (SW-2004)For use with ripple tank, to operate both the rippler motor and the illuminate. Output 12 V A.C. max 24 W for illuminate and 0 to 6 V D.C. variable for rippler motor. Operates from 240 V A.C. mains.

SW-1785 - ESAW Slinky Spring with Stand Long slinky for superwave demonstrations. On stand with instructions.

ESAW Dual Purpose Ripple Tank (SW-2013)This dual purpose tank is a versatile apparatus allowing all types of waves and wave motion. With illuminator lamp and important accessories included it forms a complete ready to use unit. The unique design and size allows it to be used on an overhead projec...

SW-1794 - ESAW Vacuum Metal Plate The top plate measures 11" in diameter and can be used with bell jars up to 9" in diameter. Constructed of cast iron, the plate is equipped with a 3/8" hose connection, vacuum release valve, and rubber gasket to provide a tight seal.