Jolly Bulb with Gauge Glassware_Glass Beakers providing low-temperature-coefficient reference values for

providing low-temperature-coefficient reference values for Ohm's-law and bridge calibration work

Polished wooden organ pipe 34

Research-grade oxygen spectrum tube at 26cm with a 10cm central capillary

this decade box selects cascaded values for RC-time-constant

Jolly Bulb with Gauge Glassware_Glass Beakers providing low-temperature-coefficient reference values for60 mm dia. Bulb connected to a bourdon guage. Gauge is calibrated in kg cm2 and in psi. Jolly bulb is 60mm diameter and is directly connected to a bourdon gauge. Use for investigation of gas at constant volume By inserting the glass bulb into either warm or cold water the expansion and contraction to the air contained in the bulb can be seen as a pressure change on the gauge. Gauge is calibrated in kg cm2 and in psi.