[Healeys] HF1746/47/48 horns assembly

[Tadeusz Malkiewicz]

Hello,

I am trying to understand the Workshop instructions for the horns and have a
small problem - what is AIR GAP SETTING? And what are the following values:
High Note 0.019-0.022 ins.
High Note 0.024-0.026 ins.

What are "ins."?

I do understand how to regulate it, but what are these values??


Best, Tadek