Syphon Barometer with Celsius and Fahrenheit Scales, 41" Long Glass Sets & Apparatus_Distillation Apparatus Steel keepers across the 50

Steel keepers across the 50 x 12 x 8mm Alnico bar pair preserve field strength in storage between lessons

High-level peroxide test strips in a 50-strip vial calibrated at 0

Seven-metal 20mm density cube set with element-stamped brass

the workhorse high-impedance unit for low-current voltage-divider and signal-conditioning work

combining protective gripping with angular adjustment on one piece

Syphon Barometer with Celsius and Fahrenheit Scales, 41" Long Glass Sets & Apparatus_Distillation Apparatus Steel keepers across the 50Syphon 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.