Brand: Strait-Line / The Irwin Auger Bit Company. Item: Chalk line reel and plumb-bob metal housing marking tool. Markings: STRAIT-LINE CHALK LINE REEL, PLUMB-BOB, Patent No. 2589500, Made in U.S.A., The Irwin Auger Bit Company, Wilmington, Ohio U.S.A. Details: Integrated winding handle, top hook for attaching to work surface, sliding blue fill door marked "TO FILL SLIDE", textured metal case likely aluminum. Use: Designed for snapping straight chalk lines for construction or layout work and for use as a plumb bob.
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