The BOBi G4 Diaphragm Gas Meter is a dumb gas meter made by Meters UK. It is a fairly industry-standard gas meter made from aluminium. I would estimate the lifespan of this meter to be up to 20 years.
Reading a BOBi G4 gas meter is very easy. Simply make a note of the digits on the meter, reading from left to right. Remembering to include any leading zeros. Any digits surrounded in red should be ignored, we are only interested in the ones surrounded in black. So in the case, the meter reading is 00693.