Turning the stack over is a good way to do a quick check but for the traveling I like Spurlocks method. The stack doesnt have to be removed or turned over to check the results. You travel the end hammers of a section. I use a square sitting on a flat bench and turn the square around to check. Take an 1/8 x 1/2 stick the length of a section and with modified clothes pins, attach the stick under the shanks with the clothes pins. The stick has marks on it or you can make reference marks as you go with a pencil. Pretty soon there is not a spot on the stick without a reference mark. I draw a pencil line next to the shaft and you can see movements of a lines width. I use a long screw driver about the mid point of the stick to raise and lower the shanks through the range. When you are done, stand the shanks up and admire how evenly spaced they are. (and the hammers dont get dirty) Keith Roberts
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