Scribe-Master ALJIG is a professional router-based installation jig designed specifically for fitting Angel Ventlock sash window restrictors quickly, accurately and in situ.

Developed for window fitters, joiners, contractors and maintenance teams, the ALJIG allows precise installation of Angel Ventlocks without removing the sash. This significantly reduces labour time, disruption and risk of damage when working on finished properties or occupied buildings.

The jig is engineered to deliver consistent, repeatable results across multiple installations, making it ideal for trade professionals carrying out retrofit or compliance-driven safety upgrades.

Compatible with both lockable and standard Angel Ventlock types, the ALJIG includes inserts for countersunk and surface-mounted configurations. It is suitable for use with a standard 12mm straight cutter and professional router.

Key Benefits:

• Install Angel Ventlocks without removing the sash

• Fast, accurate and repeatable routing

• Suitable for retrofit and new installations

• Designed for clean fitting with dust extraction

• Includes European and USA guide bush options

• Trade-grade construction for site use

For professionals installing window restrictors in line with UK building regulations and recognised safety standards, the ALJIG provides a controlled and efficient installation solution.