US 12,392,610 B2
Reference point indicating apparatus
Noriyasu Kiryuu, Tokyo-to (JP); Ryosuke Jinnouchi, Tokyo-to (JP); and Nobuyuki Nishita, Tokyo-to (JP)
Assigned to TOPCON CORPORATION, Tokyo-to (JP)
Filed by TOPCON CORPORATION, Tokyo-to (JP)
Filed on Feb. 2, 2023, as Appl. No. 18/105,014.
Claims priority of application No. 2022-015536 (JP), filed on Feb. 3, 2022; and application No. 2022-199990 (JP), filed on Dec. 15, 2022.
Prior Publication US 2023/0243652 A1, Aug. 3, 2023
Int. Cl. G01B 15/06 (2006.01); G01C 15/06 (2006.01)
CPC G01C 15/06 (2013.01) 15 Claims
OG exemplary drawing
 
1. A reference point indicating apparatus comprising: at least two link plates, a slide slit formed in each link plate, an indicator configured to be slidable along each slide slit and to be provided at an intersection of a center line of each slide slit, and at least three leg portions configured to be provided on the same circumference centered on said indicator, wherein said indicator is configured to be located on an intersection of a perpendicular bisector of each straight line connecting centers of leg portions adjacent to each other, said leg portions are configured to be contactable with an object by sliding said indicator, said indicator is configured to indicate a reference point of said object in a state where each leg portion is in contact with said object.