Vintage Pennwalt 62B-4D-0800 Pressure Gauge 0-800 mmHg Millimeters Of Mercury
Wallace a d Tiernan Pennwalt 62B-4D-0800 Pressure Gauge 0-800 mmHg Millimeters Of Mercury Max Case Press 35 Psig Used see photos. 1 mmHg = 1 Torr, so this gauge also measures 0-800 Torr (vacuum pressure ranges). Vintage looking gauge, great piece for collection. SJ