At meteorological stations, in addition to observations of ice– frost deposits as meteorological phenomena, instrumental observations of ice–frost deposits are made on the wires of the ice machine. These observations include quantitative measurements of the weight and size of the sediments, as well as their nature and structure.
Ice and frost deposits include deposits of ice (glassy, crystalline, snow-like) on the surface of structures, tree branches, and wires.
The ice machine consists of three racks with two pairs of wires attached to them, which serve as receivers of ice deposition.
The racks can be metal or wooden. They are installed on the meteorological platform vertically at a distance of 90 cm from each other so that a right angle is formed in the plan, one side of which is directed from north to south, and the other from west to east.
The bottom of the wire when the observations are not removed and are known as persistent. By changing the amount of sediment on them, the process of accumulation is determined. The size of the deposit is measured on these wires. The upper wires are removed to determine the mass of the deposit and are called replaceable.