Annotation of standard text SAE ARP493B :
This recommended practice is intended to recommend the basic shapes and dimensions for knobs used in aircraft. Two basic types of knobs, the bar shape and the round shape, are described, as well as several widely used variations of these two basic shapes.
SUBJECT TAXONOMY: Exterior lighting, Avionics, Human factors, Interior lighting, Parts, Safety
SUBFILE: Aerospace
TYPE OF DOCUMENT: Aerospace Standard
Stabilized: Mar 2017 