1/4 BSP bottom compound pressure vacuum gauge, filled with glycerin, 68 mm in diameter, with a range of -1/+10 bar and -30 - 150 inches of mercury/pounds per square inch Filled with glycerin Brass internal structure 1/4 BSP bottom connection Accuracy class 1.6% Suitable for water, oil, air and gases with a pressure up to 10 bar Maximum operating temperature 60 degrees Celsius Ideal for hydraulic applications Range selection: - -1 - 0 bar, -30 - 0 inches of mercury - -1 - 1 bar, -30 - 15 inches of mercury/pounds per square inch - -1 - 2 bar, -30 - 30 inches of mercury/pounds per square inch - -1 - 4 bar, -30 - 60 inches of mercury/pounds per square inch - -1 - 7 bar, -30 - 100 inches of mercury/pounds per square inch - -1 - 10 bar, -30 - 150 inches of mercury/pounds per square inch Do not use for nitrogen or oxygen Package contents: - 1 compound pressure vacuum gauge