Pressure measuring device

A pressure measuring device comprising

• a support casing having an aperture,
• a substrate mounted in the casing and deformable through the effect of a pressure to be measured introduced into the casing through the aperture,
• at least one electrical deformation sensor, comprised of a thick-film resistor, applied to the substrate,
• circuit means housed in the casing and connected to the at least one electrical deformation sensor for outputting electrical signals indicative, according to a predetermined response curve, of the deformations of the substrate and hence of the pressure acting thereon, and
• manually-operable electrical adjustment means mounted in the casing and connected to the circuit means, for modifying predetermined characteristics of the response curve;
• said adjustment means including first means for causing a constant-magnitude increase or decrease in the intensity of the signal output by the circuit means and
• second means for multiplying the intensity of the signal output by the circuit means by a constant factor wherein said casing is provided with the access means to enable adjustment of said first and second means from the exterior of said casing.