US$ 24.00
sized to accept a bell jar for atmospheric-pressure and vacuum demonstrations
the next-step instrument up from the 15 MHz EI-800 for AC-signal
Generates a steady steam bath around a sliding thermometer through a 180 by 115mm copper vessel with filling tube
5 inch specific gravity cylinder with a top hook
Single-pole double-throw switch on a demonstration base
Variable Angle Glass Prism, 15° x 15° x 150° Size_Medium sized to accept a bellGlass prism with a 15 degree apex and 15 x 15 x 150 angles, the doubled apex prism producing about twice the deviation of the 5 unit while still in the small angle regime.
US$ 24.00
US$ 115.00
US$ 91.00
US$ 110.00
US$ 21.00
US$ 29.00
US$ 120.00