Johnson Level & Tool Mfg. Co., Inc.

Diamond Tech LLC

Fisco Tools Limited

Timothy J Wojciechowski

David C Mencel

William G Johnson

Robert A Johnson

John Dwyer

Dave Statza

Glenn T Walters

Barry Howard Lee

Richard J Gruetzmacher

Carpenters square

Crosscut square

A layout tool for scribing an arc includes an arm, a variable location pivot point arrangement on the arm, and a plurality of mark openings spaced from the pivot point arrangement. A position fixing member, such as a nail, is engaged with the pivot point arrangement to fix the position of the tool on a workpiece at a pivot point defined by the position fixing member. A marking instrument is engaged within one of the mark openings, and the tool is pivoted on the workpiece about the pivot point to make an arcuate mark on the workpiece at a radius defined by the location of the position fixing member relative to the mark opening within which the marking instrument is engaged. The tool may be a square, which is configured with two arms that extend away from each other at a predetermined angle.

Variable radius arc scribing arrangement for a framing square

A level includes a level body having top, bottom and side walls, and a window that opens into the interior of the body. A vial is positioned within the window. The vial is carried by, and rotatable relative to, a vial mount. The vial mount and the level body include engagement structure that fixes the vial mount against movement relative to the level body. Securing members, such as screws, are movably carried by the vial mount, and are engageable with the vial in order to selectively adjust the angular position of the vial relative to the level body and to selectively fix the angular position of the vial relative to the vial mount, and thereby relative to the level body.

Growing community of inventors

Hubertus, WI, United States of America

Timothy J Wojciechowski