Patent Number: 6,167,629

Title: Electronic level and a leveling rod for use in combination with the same

Abstract: A leveling rod for an electronic level has a plurality of bar-shaped marks disposed adjacent each other in a longitudinal direction along the leveling rod in parallel with each other and perpendicular to a length of the leveling rod. The marks are arranged at a constant pitch. The width dimensions of the marks in the longitudinal direction of the leveling rod are represented by a plurality of integers. A permutation of predetermined number of values chosen from a sequence of numbers made up of a sequential array of the ratios of the width dimensions is arranged to be different from a permutation chosen from any other portion of the sequence of numbers.

Inventors: Chiba; Minoru (Kanagawa-ken, JP)

Assignee: Sokkia Co. Ltd.

International Classification: G01C 15/02 (20060101); G01C 15/06 (20060101); G01C 005/00 (); G01C 015/02 ()

Expiration Date: 01/02/2018