12V DC Power Supply for Hoffman Voltameter, CE Certified Glass Color_Transparent Compact metal-box convection demonstrator at

Compact metal-box convection demonstrator at 10 by 4 by 3 inches with two glass chimneys

this pipette-type hydrometer draws electrolyte into a glass body with a colored-zone float for direct reading

5-inch stainless steel rod

Single-degree graduations and a non-magnetic plastic case allow this 100mm tangent compass to mount on any tangent galvanometer for precise direction-and-deflection readings

the wider-range Wheatstone-bridge reference

12V DC Power Supply for Hoffman Voltameter, CE Certified Glass Color_Transparent Compact metal-box convection demonstrator atCE certified 12V DC power supply designed specifically for driving Hoffman voltameters during electrolysis demonstrations that separate water into hydrogen and oxygen.