| 摘要 |
PROBLEM TO BE SOLVED: To make a reference line set by a laser beam and a reference line drawn in a target possible to accurately and easily match with each other in marking work by inexpensively improving only a target without any modification of a laser surveying apparatus. SOLUTION: In a laser surveying apparatus target 6A constructed of an acrylic plate 10 carrying the reference line 20, an isosceles triangular cutout 50 having a center line 52, which matches the reference line, and a base 54 slightly longer than a width d of an irradiated part 26, which is irradiated with a laser beam emitted from the laser surveying apparatus, on the acrylic plate is arranged in the acrylic plate. COPYRIGHT: (C)2003,JPO
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