The Heidbrink meter in Boyle&;s machine
Heidbrink is a flowmeter used in past. It consists of a metal tapered tube with inveed black float. The upper-end projects in the glass tube. Other type of flowmeter used in past was Connell which has round bobin.
Reduces pressure of gases
Indicates flow of gases
Indicates humidity of gases
It a fixed orifice meter
Anaesthetic equipments