Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA
Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA
Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA
Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA
Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA
Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA
Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA
Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA
Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA
Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA
Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA
Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA

Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA

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Antique Early 1900s Brown & Sharpe No. 635 Screw Pitch Gauge 26 Leaf Tool RI USA

Description: For sale is an early antique/vintage Brown & Sharpe No. 635 26-leaf screw pitch gauge, manufactured in Providence, Rhode Island, U.S.A. Based on the early rounded casing design and pre-1920s style two-line maker stamp without a body-stamped model number, this piece dates to the early 1900s–1910s era.

This classic machinist tool features 26 folding blades used to identify threads per inch (TPI) on screws, bolts, and threaded components.

  • Brand: Brown & Sharpe Mfg. Co.

  • Catalog Number: No. 635

  • Era: Circa early 1900s–1910s (Pre-1920s)

  • Origin: Providence, R.I., U.S.A.

  • Leaf Count: 26 leaves / pitch blades

  • Dimensions: Measures approximately 2-3/4 inches long when closed

  • Markings: Case stamped "BROWN & SHARPE MFG. CO. / PROVIDENCE, R.I. U.S.A." Individual pitch counts stamped at the base of each leaf.

  • Condition: Antique pre-owned condition with age-appropriate patina and light surface discoloration. Leaves fold properly and stamped pitch markings remain legible. Please inspect photos for exact cosmetic details.

selling as pictured 090726 GP