Builder’s Key – Unlock Doors and Measure Cylinder Length
Once a lock cylinder has been removed – for example by pulling or snapping – this builder’s key allows the door to be securely unlocked and re-locked. It is inserted directly into the mortise lock and works without requiring a new cylinder.
An integrated length scale makes it easy to determine the required cylinder size while the key is inserted. This allows for immediate replacement part selection without additional measuring tools.
Perfect for:
- Fire brigades, locksmiths & police forces
- Emergency openings and cylinder replacement
- Quick cylinder size identification on site
