The
Research Engineers precision clinometer has been specifically designed
to accurately set the slope angle of PAPI
system projectors. It
has a precise longitudinal spirit level with a micrometer type screw
adjustment calibrated in degrees and minutes. Instruments may also be
fitted with an optional cross level.
Needing
no electrical supply, the clinometer is constructed in aluminium and
stainless steel, and is supplied in a fitted protective case. Overall
accuracy of the Research Engineers PAPI clinometer is better than one
minute of arc.