The Parallel Ruler is an indispensable tool in the maritime industry.
The tool consists of two straight rulers joined by two arms, allowing them to move closer or farther while always being parallel to each other.
The ruler is used to draw parallel lines on the chart, allowing the sailor to draw the ship’s paths on the chart.
Manufactured using a special transparent plastic material that makes the ruler durable and not bent.

MA RI Maritime Trading & Services Co., Ltd. Head Office: 183C/5P Ton That Thuyet St., Vinh Hoi Ward, Ho Chi Minh City

Offices and Stores

– Northern Region: 1423 Ngo Gia Tu St., Hai An Ward, Hai Phong City

– Southern Region: 389 Dao Tri St., Phu Thuan Ward, Ho Chi Minh City

– Central Region: 239 National Highway 1A, Binh Son Commune, Quang Ngai Province

Phone: (028) 3636 1640 / 090 3000 231