August W Katsma

US Patent:

20030088992, May 15, 2003

Filed:

Oct 22, 2002

Appl. No.:

10/277353

Inventors:

Robert Nelson - Wyoming MI, US
August Katsma - Wyoming MI, US

International Classification:

G01D021/00

US Classification:

033/640000

Abstract:

A guide for marking or cutting at an oblique angle corrugated sheet material for buildings, decks or the like comprises a base that is mounted on the surface of corrugated sheet material by means of clamping members that grip the corrugations on the face or surface of the sheet material. A protractor rotatably mounted on the base include a straight edge that provides a guideline for a marking tool or cutting tool. The straight edge can includes a number of interconnectectable or hinged extension sections that can be used to provide a longer straight edge for marking a guide path over a considerable width of sheet material. The present invention is a lightweight, relatively inexpensive and relatively compact tool that can readily be used on the job site for making accurate, oblique cut lines in large siding panels.