Gay Lussac - Apparatus, complete

For determining the relationship between pressure and temperature in a gas at a constant volume
as well as determining the point of absolute zero.
Hollow metal ball with attached high-quality manometer;
the metal adapter piece enables it to be mounted on the lid with 4 holes (P2700-2ED).
Metal ball: D = 60 mm
Manometer range: 840 - 1240 hPa