compatible with needle 897- below. Replacement for Zenith part number 46-7338-43 A similar knob stamped with part number 46-8255-32 is a compatible substitute. This is the knob that allows you to easily rotate the needle assembly. It is press-fit on the top of the metal shaft of part number "897-" seen below.
NOTE: This knob is obsolete but don't worry we are working on a solution. Please jump on the waiting list to be notified upon its release expected in 2023!