With the aid of a Vectormaster, you may quickly determine a course that will put maximum distance between your vessel & an oncoming storm, given the position of a storm & direction & speed of its advance. This circular slide rule can be used to determine the solution of time, speed & distance, & fuel consumption. It can also be used for conversions, multiplication, & division. Turning the dial on the face of the Vectormaster permits rapid solution of problems involving vectors, such as those encountered in current sailing, determination of true wind direction & force, & apparent wind to be expected on other headings.
- Two-sided circular slide rule- Sturdy PVC construction- Instructions on backside- Lifetime warranty