The Siegley No.4 is an American bench plane from the Siegley Tool Company. Produced in both flat-sole and corrugated-sole variants.
In this collection represented by two examples — one flat-sole (STS Siegley) and one corrugated (No.4C).
Cast iron body at No.4 size. Siegley's own design, distinct from the Bailey pattern.
Smoothing plane for precise finishing work.
This page documents the canonical Siegley No.4.
