Not really sure where to post this , but the wife picked this up today at a local yard sale . Trying to find out what it is , the seller thought it to be some type of carpenter tool . Internet search found a " Mason's Level " which was similar , but not quite , though this could still be one . It measures 21 inches high , and 20 3/4 inches wide , though from the wear on the bottom corners , it probably was 21 inches wide also . Along the side's of it , it look's like something was attached to it at one time . Any ideas ?
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