The table is 20" by 18" and the pin is 12.5" from the edge. Router in the up position. you can also see the height adjustment under the router cuter which is a 4mm threaded rod.
I extended the hinged arm to get a sound board under the router.
It is also has a height adjustment at the back for thicker boards.
The router is a 2mm dia with a 2mm dril bit as the pin. Fix the template to the underside with double sided tape. In use put the router down and adjust for height and switch on, the weight of the arm is enough to force the router into the wood. If you need any more information email me at richardniceguitars.co.uk