A housing, the exposed one electrode is provided on one surface of one end of the housing, a holding portion formed at the other end of the housing, the exposed electrode and the other that is provided in the holding portion, the geometric center of the holding portion portable electrocardiograph which is characterized by having a measurement key is provided to the geometric center of the holding portion toward the other end of the housing and is deviated and towards one of the sides. The holding portion is in the form of a unique, and the users wrist, arm and is surrounded to the body portion to form a space, the user becomes a correct posture naturally, the monitored data is accurate and reliable so that some of the.ハウジングと、このハウジングの一端の一面に設けた一方の露出電極と、上記ハウジングの他端に形成した保持部と、この保持部に設けた他方の露出電極と、上記保持部の幾何学的中心に設けた測定キーとを有し、上記保持部の幾何学的中心が上記ハウジングの他端に向って及び両側の一方に向って偏位していることを特徴とする可搬式心電図計。上記保持部が独特の形であり、使用者の手首と、腕と、胴部がスペースを形成するよう囲まれており、使用者は自然で正しい姿勢となり、モニタされたデータは正確で信頼性のあるものとなる。
