We are able to calibrate the following Rotring Engineering products: 0 to 10 bar 4" Pressure Gauge 0-6 bar 4 inch Pressure Gauge 0-60 bar 4 inch Pressure Gauge Please call us on +44(0)1159 003550 or email calibration@hydrotechnik.co.uk to discuss your requirements. Search for manufacturers of other instruments we can calibrate