To provide a cordless crucial searcher capable of detecting quartz in an extremely sharp manner and making it easy to search a pot without switching sensitivity.SOLUTION: A main body 11 and a distal end housing member 12 both of which constitute a pen type housing and are made of an electric good conductor, a battery 21 attached to the main body 11, a probe 14 installed in the distal end housing member 12 and connected to the battery 21 And a pair of electrodes 17 made of a front end housing member 12 and the probe 14 is inserted into a cylindrical pen tip portion 12b having an outer diameter of 2 mm to 2.5 mm with a diameter of 1 mm , A pair of electrodes 17 were placed extremely close to each other so that they could be operated with commercially available dry batteries which are easily available without using cords and electroluminescence was applied to the main body 11 or the tip housing member 12 at appropriate positions So that a light emitting device can be attached to facilitate the use and carrying.(FIG.【課題】極めて鋭敏につぼの検出を可能にし、感度の切替を要することなくつぼ探索を簡単に行い得るようにしたコードレスつぼ探索器を提供する。【解決手段】ペン型ハウジングを構成するいずれも電気良導体からなる本体11と先端ハウジング部材12において、本体11に取り付けた電池21と、先端ハウジング部材12内に設置され電池21と接続した探索子14と、先端ハウジング部材12とからなる一対の電極17との間に電流感知ブザー15を介在させ、かつ探索子14を外径2mm~2.5mmの筒状ペン先部12bの、内径1mmの径内に置くことにより、一対の電極17を極めて近く配置してコードを使用せず、容易に入手できる市販の乾電池で作動可能とし、本体11または先端ハウジング部材12の適所にエレクトロルミネセンスを応用した発光装置を付着して、使用・携行の便宜を図ることができるようにしたことを特徴とする。【選択図】図2
