NM3Z (16 inches)
Same as NM-3 but in white.
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.
Same as NM-3 but in white.
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.