Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler1484

Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler9142

Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler5878

Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler4499

Vintage "Mathema" Boxed Nautical Captain Fields Parallel Ruler 15inch (38cm).

Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler1558

Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler2407

Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler7104