The regulation concerns catchweighers produced and imported to Norway.
Regulation on requirements to instruments for automatic weighing of single quantities (catchweighers)
There are special requirements for catchweighers used for landing fish. They must have a display or other clear reading option placed in or by the weighing instrument and the measured quantity must be able to read continuously and directly.
The catchweigher must have at least one additional display that repeats the display of the weighing result from the main display. The additional display must not have functions that can affect the weighing result.
The catchweiger must have more than one counter, one being a continuous counter that runs continuously and which cannot be reset without breaking seals. The total counter shall have the same division as the basic counter.