In the early 1920's, the US Government contracted Rieker Instruments Company to produce bubble style pitch and roll indicators for the fast emerging aircraft market.
One of the most famous inclinometer fluid filled vial type installations - if not the most famous -
was the use of a pair of Rieker glass tube
instruments on the panel of the
"The Spirit of St. Louis". In 1927
chose the lightweight Rieker
P-1057 Degree Inclinometer
to give him climb and descent angle information.
to produce precise instrumentation for the aviation industry led to our status
as the dominant supplier to Original Aircraft Manufacturers to this day. Our specialty
Web Links of interest:
Smithonian Institute Ryan NYP
"The Spirit of St. Louis"