289C Height and Depth Gage Set for Combina tion Squares When combined with the 289A or 289B Attachments, this set converts any combination square or set having blades up to 1" (25mm) wide into a height gage or depth gage. In addition to a clamp block, the set has a scriber, 6" rule (610N-6) and a 6" (150mm) rod, any one of which may be inserted in the clamp and locked in position. By applying the scriber, a practical height gage results. Use of the rule converts the tool to a depth gage for measuring in 64ths of an inch. With the rod used as a depth gage, small recesses and holes can also be checked. 289 Att achments for Combina tion Squares These attachments fit combination square blades 1" (25mm) wide and permit attaching rules, blades or thin steel try squares, up to 1" (25mm) wide, at right angles to the blade of the square for laying out key seats, centers, scribing horizontal lines, and measuring diameters. Available in two sizes listed below. Both sizes can also be used with 289C Height and Depth Gage Attachment. 289A with the 289C Clamp Block and Rule on blade, rod and scriber shown on right Measuring depth Measuring height Combina tion Squares 289 Attachments for Combination Squares Cat. No. EDP Range Seat Length Blade/Rule Blade Rule 289A 51322 1" (25mm) 1-9/16" (40mm) 1-11/16" (43mm) 289B 51323 2-3/8" (60mm) 2-3/8" (60mm) 289C Height and Depth Gage Set for Combination Squares Cat. No. EDP Description 289C 51324 Clamp Block with Scriber, Rule and Rod 289A with 13A Double Square 289A 274 S quares