UPWARD VERTICALITY CHECKER

PROBLEM TO BE SOLVED: To provide an upward verticality checker capable of quickly inspecting the vertical state of both surfaces to be measured adjacent to each other simultaneously with a less working man-hour and useful for simultaneously adjusting both surfaces to be measured to be in the vertical state with excellent workability without high grade experience so as to fix an object to be measured in the vertical state. SOLUTION: This upward verticality checker is constituted of an abutting body 12 provided with a first abutting surface 13 and a second abutting surface 14 respectively abuttable on a pair of the surfaces 2 and 3 to be measured in the height direction adjacent to each other in the object 1 to be measured and a laser beam receiving scale 15 through a laser beam 16 vertically elevatably with a position separated from the first abutting surface 13 and the second abutting surface 14 respectively for prescribed distances ro and so in an inner side direction as an origin P to the abutting body 12. It is preferable that the origin P is provided on the position separated from the first abutting surface 13 and the second abutting surface 14 of the abutting body 12 respectively for a prescribed equal distance in the inner side direction.