This universal devise serves to continual monitoring of level in bores, watercourse level, level in reservoirs or - in combination with specific overflow - to flow measuring, as the case may be. The registry drum turns once within 8 days. There is possible to equip the clock mechanism with a divider to set one drum turn to 8; 16; 32; 64; or 128 days. The 503 G uses mechanical float system with logger and electric clock mechanism. The 503 GA is equipped with multi-turn aripot to facilitate wire data transfer or data digitalisation with possibly to connect recording instruments.
The whole limnigraph is set in a metal locker to protect it against weather impact and damage as well.
Advantages: classic robust design with proved long term service life and opportunity cost.