Jim Weir question - Comtronics helmet adaptor?

In article ,
"RST Engineering" wrote:

I didn't say anything about the actual parts cost, just the price of the
product. Can you make it for nickels and dimes of parts? You bet. Can you
sell it for $120? Obviously.

Old story about the retired A&P who was called in to see if he could find
the problem with a 747 that nobody else could find. Ten minutes later he
marks a part with an X in chalk and says replace this part and the problem
will be fixed. SUre as hell, they replaced the part and the problem was
fixed. A&P sends the airline a bill for $10,000. The airline objects that
it took ten minutes to find the problem and the bill is excessive and please
itemize. THey got the bill back with $100 for marking the part and $9,900
for knowing where to mark. They paid.

Old engineering joke, many variations.
Here is another one for you.
Jim, do you know the measure of 1 ORCH?