UK single and double back box template

Hi,This is my version of a template for cutting out metal or plastic back boxes for UK electrical sockets. From the pictures, you can see that I have added two levels which can be purchased from Amazon (11 pcs mini bubble Spirit level 10x10x29mm). These fit tightly with a little glue but hold in place nicely.The template can be used for single or double metal back boxes when you need sockets chased into solid walls, as well as for plastic single and double back boxes for plasterboard stud walls.If you are installing just one back box, the levels are perfectly accurate for this purpose. However, if you are installing back boxes as a domestic or commercial electrician and use a laser to ensure an accurate level for multiple back boxes, I have added accurate markings for the laser to give you a centre line for the socket screws. I've been using this for the past year and its never let me down. Ive used PETG with 25% infill but its open to what ever you want to print it in.Hope it help