The working depth adjustment is made with a reference index lever, guaranteeing a very simple quick and precise setting.
On the «rear gauge» metering units, the depth control is ensured by the rear press wheel unit.
On the «balancing» metering units, the depth control is ensured by the front wheel and the rear press wheel unit. An adjustment spring enables the distribution of the front / rear loads even to a « Front gauge » depth control.
A kit for modifying the NC Technic metering unit with « rear gauge system » into « balancing system »