G-Square Fin & Outline Layout Tool For Surfboards

Description

G-Square Surfboard Fin and Outline Layout Measuring Tool

Back by popular demand and improved!

The G-square is simplest and most intuitive way to measure and lay out surfboard fin positions including distance from the tail, distance in from the rail, and fin toe-in angle.

Just pencil mark your fin position “shaper’s dot” coordinates up from the tail and in from the rail on the bottom of the G-square and simply subtract the toe-in measurement from the top of the G-square and place a dot to set the angle.

Position your fin box install router jig on the dots and route away!

Standard fin toe-in measurements:

1/4″ toe-in for the front fins in a tri-fin or quad setup

1/8″ – 3/16″ toe-in for rear quads fins

1/8″ – 3/16″ for keels or twin fins 

The new and improved G-square now also measures key outline points on your shape (widepoint, 12″ from nose, 12″ from tail) with it’s slotted width markings from 6″ to 24″ wide.

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