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