For sale is a vintage watchmaker parallel pivot broach and adjustable micro-reaming tool. This specialized horological hand instrument was engineered to cleanly enlarge, deburr, and smooth out microscopic brass pivot bearing holes on watch/clock gear trains.
Features & Details:
• Adjustable Depth Sleeve: Features a center knurled collar assembly that screws smoothly up and down the threaded main shaft to serve as a micro-depth stop guide.
• Integrated Tapered Cutting Needle: Equipped with its original high-temper tool steel broach rod featuring precision-milled long cutting edges.
• Sleek Balancing Handle: Features a smooth trailing guide tail handle rod designed for ultra-fine, balanced fingertip rotation under bench magnification loops.
• Authentic Workshop Patina: Preserved in an uncleaned, authentic vintage condition with a solid metal finish.
Perfect addition to an active clock repair station, gear train restoration kit, or collection of early-to-mid 20th-century precision machining hand tools. Included US quarter coin in photographs for scale reference.