On knurled control knobs with position indicator EN 5343, the measuring gear is built into the knob--i.e., hand knob and indicator are one integrated unit.
This makes for an esthetically pleasing design as well as a good value.
Hand knob and sight glass are all in one piece, welded ultrasonically. They are spray waterproof and corrosion proof (Protection class IP 67).
The gravity drive is mounted on ball bearings to give the most accurate reading, usable up to a spindle inclination angle of 60°.
One complete revolution of the red pointer corresponds to one revolution of the spindle. This gives very accurate readings, and combined with
the digital indication from the counter, is very simple to read.
Installation instructions
Turn the spindle to the starting point (0 position)
Move the unmounted position indicator to the 0 position before mounting it
Install the position indicator to the spindle and fix it with the screw
Specification
Control knob, plastic
Technopolymer (Polyamide PA)