CYA IFR Instrument Plotter

Lexan resin plastic plotter will never warp, melt or breack in high temperature environment!
Nautical miles to Statute Miles conversation scale are showing on both sides.
STANDARD side includes:
1=5
1=8
1=10
1=12
1=15
1=23

NON-STANDARD side includes:
1=7
1=7.5
1=14
1=16
1=20
1=31

CYA Aviation are a pround manufacturer for own CYA brand pilot supplies.