Fathometer JP Justice arbiter arbitrator badge banner bencher bob character characteristic control indicator count-rate meter critic current indicator density indicator depth sounder detonation indicator device differentia display earmark echo sounder fault lamp flowmeter galvanometer gauge hallmark his honor his lordship his worship humidity indicator hygrometer idiosyncrasy image index indicant insignia interferometer ionization gauge judge justice keynote lead liquid-level indicator load indicator logger magistrate mark measure meter moderator needle note pH meter peculiarity picture plumb plumb bob plumb line plummet pointer potentiometer probe property psychometer pyrometer referee representation representative seal sigil sign signal signature sound space probe stamp sure sign symptom telltale sign thermocouple time-interval meter trait turn indicator umpire vibration meter voltage indicator