The horizontal and vertical lines are for alignment when taping the pieces together. The horizontal lines measure 1". The verticals are 7.5". Use those dimensions to ensure that it is printed to scale.
When it's assembled, it should fit into the panel nicely
This should be very helpful for determining the layout of the gauges because you can draw it out and lay it over your existing instruments to see how it will look before cutting, welding, gluing, hammering or dropping anything.
When the layout is finalized, mark the centers of all gauges on the template, and transfer it to some sheet metal... or whatever it is you're working with. I've been using 47 pound paper for templates or various projects and it works great. It's friendly with my printer and thick enough that one template will work 3 or 4 times before it's totally trashed... maybe longer if you're careful. Of course, only use the heavy stuff once everything is finalized. It's expensive.
If anyone would like, I can send this in several CAD formats.
