Perfect for my use.Could have better pictures,but otherwise perfect ;)
Text excerpt from page 13 (click to view)
IMPORTANT This hob must be installed by qualified personnel to the relevant British Standards. Any gas installation must be carried out by a registered CORGI installer. The manufacturer will not accept liability, should the above instructions or any of the other safety instructions incorporated in this book be ignored. On the end of the shaft, which includes the GJ 1/2" threaded elbow, adjustment is fixed so that the washer is fitted between the components as shown in the diagram. Screw the parts together without using excessive force.
Connection to the gas supply should be with either rigid or semi-rigid pipe, i.e. steel or copper. The connection should be suitable for connecting to RC 1/2 (1/2 BSP male thread). When the final connection has been made, it is essential that a thorough leak test is carried out on the hob and installation. Ensure that the main connection pipe does not exert any strain on the hob. It is important to install the elbow correctly, with the shoulder on the end of the thread, fitted to the hob connecting pipe. Failure to ensure the correct assembly will cause leakage of gas.
A) End of shaft with nut B) Washer C) Elbow
Rectangular cut-out size for hob
Cut Out Size
The dimensions of the cut-out are given in the diagram.
4 80 560