Gay Lussac - Apparatus, complete

To investigate the relationship between the pressure and temperature of a gas at constant volume
at constant volume, to quantitatively determine the thermal expansion of gases and the absolute zero point (Gay-Lussac's law);
Metal hollow sphere with screwed-on, high-quality manometer, a metal spacer allows attachment to the lid for calorimeter P2700-2DL
Stainless steel sphere: D=60 mm
Manometer range: 840 ... 1240 hPa
Manometer diameter: approx. 70 mm
Scale diameter: 50 mm
Overall dimensions: 70 x 70 x 170 mm
Mass: approx. 417 g