We are able to calibrate the following GL Flow products: 1" Turbine Flowmeter, Turbine 14-140lpm Flowmeter LX/BSP/ 3/4" Turbine Flowmeter LX-1/2in BSP Flowmeter unknown Flowmeter (Water) Please call us on +44(0)1159 003550 or email [email protected] to discuss your requirements. Search for manufacturers of other instruments we can calibrate