Hey guys,
If you want a fence that is easy to keep square to your router table, try using a speed square. Home Depot has a large one that is made of plastic. Clamp the side of the right angle that has the lip on it to the front or side of the table. I use a bar clamp between the front and back of the table to hold the square's lip tight against the table. Add a C-clamp to help hold the square down. Put the other side of the square's right angle adjacent to the bit. Use a second square, one of the adjustable ones with a ruler, to measure from the fence to the bit. You can also use the square as a way to check the squareness of your regular fence.
If you want a fence that is easy to keep square to your router table, try using a speed square. Home Depot has a large one that is made of plastic. Clamp the side of the right angle that has the lip on it to the front or side of the table. I use a bar clamp between the front and back of the table to hold the square's lip tight against the table. Add a C-clamp to help hold the square down. Put the other side of the square's right angle adjacent to the bit. Use a second square, one of the adjustable ones with a ruler, to measure from the fence to the bit. You can also use the square as a way to check the squareness of your regular fence.