Protractor Vorel 18798, 500 mm length, metal measuring tool

Vorel 18798 protractor is a 500 mm metal measuring tool created for accurate angle measurement, marking and layout on large-format workpieces. The instrument combines a painted steel bar with clear millimetre graduation and an aluminium foot with a plastic locking knob, giving repeatable positioning and reliable measurement for carpentry, metalwork and technical drawing tasks.

Advantages

The 500 mm length provides an extended reach for marking and measuring larger panels and boards. A painted steel bar with visible millimetre scale ensures straightforward reading of measurements, while the lightweight aluminium foot reduces handling fatigue during extended use. The plastic locking knob secures the arms in the selected position, allowing precise transfer of angles and consistent results across repeated operations.

Suitable for

• Carpentry: marking and checking angles on timber boards and panels
• Metalwork: layout and angle transfer on sheet metal and frames
• Construction and repair: on-site angle marking and verification
• Technical drawing and workshop layout: transferring measured angles to workpieces

Key specifications

• Overall measuring length: 500 mm
• Main material: painted steel bar with aluminium foot
• Locking mechanism: plastic knob for securing arms
• Scale: clear millimetre graduation on the bar
• Design: single-piece protractor for large-format angle marking

How to use

Place the aluminium foot against the reference edge of the workpiece and open or close the bar to the desired angle while observing the millimetre scale. Tighten the plastic locking knob to secure the set angle, then transfer the position by tracing along the bar or using the protractor as a guide for cutting or drilling. For repeated markings, leave the protractor locked and use it as a template to ensure consistent angle reproduction.

Usage recommendations

Ensure the reference edge is clean and free of debris for accurate seating of the aluminium foot. Avoid excessive force when tightening the plastic knob to prevent wear. Store the protractor in a dry place to protect the painted steel bar from corrosion and keep the scale legible.