ODK3091 Features: * Graduated slide rule extends up to 6"" * Slide rule runs under friction in T-lot and stops at each end to prevent sliding from falling out * X46X has two 6"" extension slides: an extension is ready for use on the first section * HX46 has hook zero falls at inside of hook, for distance measuring * X46F has flat, inside markings: numbering begins on inside of rule * For carpenters and other professional craftsmen * Increment @ Scale: 1/16 in @ 1 in * No. of Scales: 1 * Material: Wood * Measuring System: Inch * Type: Folding Rule * Price is for 1 Each Color/Finish: * Finish: Lacquer Dimensions: * Width: 5/8 in