This cleverly designed rolling parallel rule is manufactured from crystal clear acrylic with solid brass rollers, non magnetic and spindle pivot points. Fitted with a spindle brake to add stability in rougher conditions, this rule is favoured by many navies of the Northern hemisphere.

Supplied as Captain Fields Divided or Plain. Rules can be supplied in heavy duty cartons or fitted wooden cases at an additional charge.

Sizes Available (Imperial/Metric):

12" / 30cm, 15" / 38cm, 18" / 46cm, 21" / 53cm and 24" / 60cm