RULER OMNIGRID 12.5 X 12.5 for squaring up blocks up to 12 1/2 before final assembly.
RULER OMNIGRID 12.5 X 12.5 for squaring up blocks up to 12 1/2 before final assembly.
RULER OMNIGRID 12.5 X 12.5 for squaring up blocks up to 12 1/2 before final assembly.