Snow depth scale with tubular steel sections - has spiral spring joints and scale anchored in ground

摘要

The snow depth scale (9) which may be anchored (11) in the ground (1) and which comprises one or more bars or steel tubes (12, 14, 16, 17, 18, 19), which are rigid in the bending mode, and which is provided with one or more joints (13) which can bend against the force of a spring. The depth scale is constructed from tube sections, some of which are connected by elastic spring joints. The diameter of each tube section decreases towards the top of the scale. The bendable joints (13) are constructed from spiral springs.