Greisinger digital manometer including sensor gmh 3161 xx series greisinger gmh 3161 07 the greisinger gmh 3161 07 is a digital manometer including sensor for measuring the overunder pressure and pressure difference 350mbar the remarkable zero point stability as well as two measurement ranges ensures that you will always have the optimal measurements by automatically switching between measurement rangesthis handy and sturdy pressure instrument with integrated relative pressure sensor an