CRP-4 Flight Computer
The CRP-4 offers an economical but less 'long term' alternative to the CRP-1 flight computer.
It is manufactured in high quality card with plastic wind segments and plotting disc on the wind triangle side so that pencil markings can be erased in the normal way.
The circular slide rule side (without cursor) offers the coloured scales of the CRP-1.
The sliding scale is graduated with a speed range of 40 - 650, Incorporating an 'F - factor table' and edge scales on both sides for 1:250,000 NM, 1:500,000 NM, 1:1,000,000 NM and millimetres (0-208).
Supplied in a clear plastic slip case.