A maximum pointer can be mounted on most standard DN 80, DN 100 and DN 160 instruments on request.
Attached to the red pointer, is catch against which the instrument pointer knocks and cannot pass. The instrument pointer drags the maximum pointer along to the minimum or maximum reading and remains there. Thus it displays the minimum or maximum value reached since the instrument was last set back to zero. The maximum pointer can be adjusted to zero by using a special key.
The glass in which the maximum pointer is mounted is oil-tight which means that memory pointers can be fitted to liquid filled instruments