220  Indicator Warning Light

This has an amber Lense and a double chamfered chrome Bezel.  It fits into a hole drilled into the Dashboard and is retained in position by a spring clip.  It is 5/8" in diameter and 1 1/2" long overall.

Whilst this is not part of Singers original equipment, it is ideal as an inconspicuous part displaying the status of later fitted Indicators.