testo 312-2/ -3 Pressure meters for gas and water installations. Approved by DVGW according to TRGI for all uses of pressures and testings on gas boilers With the [...] ansehen     Pressure/Differential Pressure Manometer PR-200 PR-200 - highest quality, handy, rugged und easy to use - High measuring accuracy - Rugged aluminium case - Splash-proof - Schiftable [...] ansehen     Accessories PR-200 [...] ansehen     Hydromanometer/Pressure Meter Series 2000 The Hydromanometer from the Series 2000 are suitable for water and neutral gasses. Examples of usage: - Dimensioning and trimming of heat [...] ansehen