This design of rolling parallel rule is NATO approved and is in use by many Navies throughout the world. The rule is manufactured from crystal clear acrylic, solid brass rollers, non magnetic and spindle pivot points.

Supplied as Captain Fields Divided. Rules will be supplied in a heavy duty carton, or in a fitted wooden box at an additional price.

Sizes Available (Imperial/Metric):

12" / 30cm, 15" / 38cm, 16" / 40cm, 21" / 53cm and 24" / 60cm