VOREL 17310 plumb bob

The VOREL 17310 plumb bob is a masonry plumb designed for establishing precise vertical reference lines on construction sites. It combines a 400 g weighted bob, a 6 m line and a compact cassette with an automatic retracting mechanism. The tool includes a strong magnet for temporary fastening to metal elements and a sharp tip for anchoring in wood or other building materials. A mounting hole in the housing allows hanging the device on concrete walls, and the design reduces pendulum stabilization time for faster alignment.

Advantages

The built-in automatic cable retraction keeps the line tidy and protected when not in use, while the 400 g weight provides stable vertical referencing even in modest drafts. The strong magnet enables quick attachment to steel structures without additional clamps, and the sharp tip makes temporary fixation to timber or masonry straightforward. The housing mounting hole and compact cassette improve convenience and portability on-site.

Suitable for

• Establishing vertical reference lines in masonry and carpentry work
• Temporary alignment on steel structures using magnetic fastening
• Interior and exterior leveling where a 6 m line is sufficient
• Tasks requiring quick pendulum stabilization for faster marking

Key specifications

• Weight of plumb bob: 400 g
• Line length: 6 m
• Automatic cable retraction cassette
• Built-in strong magnet for metal fastening
• Sharp tip for anchoring in wood and other materials
• Housing with mounting hole for hanging on concrete

How to use

Extend the 6 m line from the cassette and attach the plumb bob by its tip to the desired reference point or fix the cassette housing using the mounting hole on a nail driven into concrete. For metal structures, attach the cassette magnetically to a suitable surface and allow the bob to hang freely until the pendulum stabilizes. Use the automatic retraction to rewind the line after marking; keep the line clean and free of knots for reliable operation.

Usage recommendations

Use on stable, clean surfaces and avoid excessive lateral forces on the line. For repetitive marking, verify vertical alignment against a secondary reference occasionally. Store the plumb bob with the line retracted to protect the cable and tip.