Pooleys NM-3 Scale Rule

Pooleys Transparent NNM030 NM-3 Scale Rule (16 INCHES)

Outside edges respectively read 0–110nm in 1:500,000 and 0–220nm in 1:1,000,000. Centre scale converts between Statute Miles (sm) 0–115sm and Nautical Miles (nm) 0–100nm.

Scales:

• 1:500,000
• 1:1,000,000