Linex 15″ Aluminum Graduated Parallel Rules Clearance buoyage and other nautical matters

buoyage and other nautical matters

Guidance for Tow Masters/Masters of Towed Objects in an Oilfield

then altered to become maroon with the defining jagged edge during the mid 20th Century

Menai Strait (1:60 000)

Section 5      Competence Assessment Tables

Linex 15″ Aluminum Graduated Parallel Rules Clearance buoyage and other nautical mattersWith bevels on all four sides; springs built in the bearings ensure a smooth motion which is critical in parallel rule operation. Cork disks on the underside prevent slipping and soiling. The sides are divided with protractor markings (double reading) and compass points. The rules are machined from . 16 inch acrylic sheet for accuracy and strength. The metal links are made from aluminum. Length: 15 inch