C.S. Osborne 6 Extension Divider.Made from Solid Steel Construction, for maximum corrosion resistance and superior durability. Highly polished finish. Can be used to scribe, draw circles, or as a measuring device. Single leg design with one movable point. Adjustable wing nut permits fine adjustments for close measurements. Made in USA.Size : 6Up to 15 circle can be scribedKnurled nutsTempered springsWeight : 5 oz.C.S. Osborne Co. is a manufacturer of specialized hand tools designed exclusively for upholsterers, auto trimmers, awning and canvas workers, furniture makers and other professionals in related trades. For generations, the family run business has always taken great pride in engineering the highest quality tools and offering our products both here in the United States and abroad. C.S. Osborne produces the most extensive line of custom tools available -and we that our tools will deliver excellent quality and superior performance.