Finally! The extended ruler attachment eliminates the need to center your Cabinet Hardware Jig on every drawer front which greatly speeds up hardware installation. Attaches to Hardware Jig for quicker centering on wide drawer fronts or tall doors. Also allows adjustable starting point for line boring in assembled cabinets (please note this feature requires extension set TP-2312 or TP-1935 with marked center lines, 2016 and newer). Includes 17-1/2″ ruler w/ 2 sided print, bracket for T-square connection, 2 extra thumbscrews for attaching to extension set. Fits all TP Hardware Jigs. Included ruler attachment provides a stop for drawer fronts up to 42″ wide. Made in USA.