TILTMETER FOR GAME BOARD SURFACE

摘要

PROBLEM TO BE SOLVED: To provide a tiltmeter for a game board surface capable of easily forming a curvature surface, reducing manufacturing cost, heightening accuracy in forming the curvature surface, heightening measurement accuracy, and heightening measurement workability since it is possible to simultaneously measure two regions of verticality and an angle of backward tilt, by performing only limited measurement required for the measurement on the degree of tilt of the board surface. SOLUTION: A void 2 is provided in a device body 1. A liquid L and a gas to be a bubble G are sealed in the void. The inner surface of the void is formed in the curvature surface F based on a contact K to be in contact with the game board surface W to be measured. The device body is provided with a tilt scale M indicating the degree of tilt of the game board surface by the location of the bubble. The void is formed approximately in the shape of a shell of which the axis line N intersects the contact at right angles. The curvature surface is formed in a curvature surface having only two regions of a verticality measuring curvature surface F1for measuring the verticality of the game board surface and a backward tilt angle measuring curvature surface F2for measuring the angle of backward tilt. Only a verticality scale M1and a backward tilt angle scale M2are provided as the tilt scale. COPYRIGHT: (C)2004,JPO