BRACE DETECTOR

摘要

PROBLEM TO BE SOLVED: To obtain an easy-to-handle brace detector excellent in portability in which the brace of an existing wooden housing can be detected surely without destroying the wall thereof. SOLUTION: The brace detector for wooden housing comprises a first electrode plate 1 to be applied to the outer wall face 30-1 of a wall 30, and a second electrode 2 to be moved along the inner wall surface 30-2 of wall 30 while facing the first electrode plate 1. The brace detector further comprises an oscillator 3 for applying a high frequency voltage to the first electrode plate 1, and a circuit 4 for receiving a detection signal from the second electrode 2 and identifying a brace based on the difference of combined permittivity of the material composing the wall 30.