Parallel rules

Tough, accurate navigation instrument with non-slip rubber pads.
Captain Fields most popular design.

Models

Models

Ref. Version Packaging
10552 30 cm (12″), red scale Cardboard
10555 40 cm (15″), black scale. Budget parallel rules. Also Captain Fields design. Plastic bag
10553 40 cm (15″), black scale. Budget parallel rules. Also Captain Fields design. Plastic bag