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The hole grid spacing is .2969 inches vertically and horizontally
This grid spacing accommodates eyelets which have a wider footprint than a turret lug

You can print the paper template above and use it to lay out your parts
Print the image above on 8.5" x 11" paper at 100% scale and Portrait mode
You can right click on the image and copy it and then paste it into a image editor like Photoshop and others
If you try and print it in your browser, it may not come out at 100% scale

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Each template should be 9 inches long x 3.125 inches tall
Measured from the black borders
Like in the image below - click on the image to see a larger image

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Then cut out both templates and tape them end to end like in the picture below
If your board is shorter than 9 inches, you only need to use the template that is numbered 1 to 30
Like in the image below - click on the image to see a larger image

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Tape the template down to a desk and lay parts on it
Make dots where you want a terminal to be
You can also just draw electronic symbols on the diagram
Draw bus lines where terminals get joined together
Like in the image below - click on the image to see a larger image

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After you have finished your layout, go to the Hoffman Amplifiers custom board program and create your custom board
Here is the link to that program

Click here to go to the Hoffmanamps Custom Board program