Syphon Barometer with Celsius and Fahrenheit Scales, 41" Long Foodsafe Twenty 1-inch sample squares spanning

Twenty 1-inch sample squares spanning ferrous and non-ferrous metals

and gray links in a 4-compartment storage case

exposing every wire and hammer so students trace the bell's electromagnetic action

dropping the bulk of the measured potential across the external resistor so the coil sees only its proportional share of the signal

Built for bulk liquid measurement

Syphon Barometer with Celsius and Fahrenheit Scales, 41" Long Foodsafe Twenty 1-inch sample squares spanningSyphon barometer at 41 inches tall with a 3. 5 inch wide scale in both Celsius and Fahrenheit, measuring atmospheric pressure via a fluid column mounted on a single piece frame.