60 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.
Please note, this item is "Build to Order" and will take up to 60 days to ship after placing your order.