THIS WAS USED FOR MEASURING BOARD FEET OF LUNBER. THE WHEEL HAS A WEIGHT ON ONE OF THE TIPS, EACH TIME THIS TIP COMES AROUND. IT MEASURES A YARD. GREAT SCRIBED NUMBERS AND THE CO. NAME: F M GREENLEAT, LITTETON, NH. DO NOT SCALE OVER 40 FT. IN LENGTH ON THE OTHER END. VERY HEAVY AND HIGH QUALITY WOOD, BRASS AND DESIGN. A GREAT GRAPHIC FORM. 56" X 28". C. 1880. FROM A PRIVATE COLLECTION IN MD.    

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