In above a Jolly Air Thermometer bulb 50mm dia is mounted on a wooden frame which can be fixed at three places, up, middle and down on the stand and enable the apparatus to be used as Jolly?s Apparatus.
In above a Jolly Air Thermometer bulb 50mm dia is mounted on a wooden frame which can be fixed at three places, up, middle and down on the stand and enable the apparatus to be used as Jolly?s Apparatus.
