Melco Box Spanner Whitworth 1/8" x 3/16"

About this tool

The 1/8" x 3/16" Whitworth box spanner is the smallest in the range, designed for extremely delicate fixings in precision instruments, fine mechanisms, and miniature assemblies. At 100mm (4 inches) long, this compact tool offers exceptional control whilst still providing the access advantages of a tubular design. These tiny Whitworth sizes are found in antique clock mechanisms, precision gauges, and small vintage engines where careful, controlled fastening is essential. The double-ended design ensures both sizes are immediately available during intricate work. Features and Benefits: • 1/8" x 3/16" Whitworth sizing for very small, delicate fixings • 100mm (4 inch) length maximises control for precision work • Ideal for clockwork mechanisms and fine instruments • Bright plated steel maintains strength despite small size • Tommy bar accommodation when additional torque needed • Tubular design accesses miniature recessed fixings • Double-ended configuration improves efficiency Specifications: Box Type: Whitworth Box Spanner Size 1 (in): 1/8 Size 2 (in): 3/16 Length (mm): 100 Tommy Bar: T33

Retailer description · Tooled Up · Observed 12 Oct 2026. Check the retailer’s listing for full specifications and contents.