Parallel Rules

140 - 12" Aluminum Arms Parallel Rules
No navigator should be without a good set of parallel rules as part of his navigation back up plan in the event of an electronic navigation failure. This 12" parallel rule is accurate and durable.
• Brushed aluminum arms
• Polished aluminum handle
• Milled with bevelled edges
• Includes protractor scale
141 - 15" Aluminum Arms Parallel Rules
Of all traditional parallel rules, the 15" Brushed Aluminum Arm Parallel Rule is the best seller. This sturdy acrylic parallel ruler is easy to use and is a necessary tool for every seagoing navigator.
• Brushed aluminum arms
• Polished aluminum handles
• Milled with bevelled edges
• Includes protractor scale 142 - 15" Brass Arms Parallel Rules
The 15" Brass Parallel Rule is assembled with high-quality solid brass arms and handles adding a bit of traditional elegance to a classic navigation tool. Made of extra strong, clear acrylic the brass parallel rule is built to last.
• Solid brass arms and handles
• Milled acrylic with bevelled edges
• Includes protractor scale
145 - 15" Value Parallel Rule
The 15" Value Parallel Rule is a basic parallel rule with dependable clear acrylic construction and marine quality aluminum arms and handles. Weems' most popular length parallel rule, this 15" parallel rule is ideal for instructional applications or for light duty sea service.
• Brushed aluminum arms
• Polished aluminum handles
• Milled with bevelled edges