MASTER line marker


Line markers enable you to trace perfect straight lines of several metres in length, in any support, without worrying about its texture or finish, in a matter of seconds.

The MASTER line marker comprises a container made of aluminium with excellent impact resistance and good marking capacity.

The reel of the MASTER line marker has 30 metres of cord and a quick collection system and lock to avoid losing cord when you tighten it to make markings.

At the end of the cord on the RUBI MASTER line marker is a high strength metal part which enables you to attach the cord to an edge or nail it down. Just one person is needed yo make marks.

This same piece of metal acts as a stop and prevents the cord from going completely into the reel.

The MASTER line marker comes with a 120 gr. bottle of chalk or "bluing" to refill the marker tank. This bottle can be screwed directly onto the marker, both for refilling and for use as a chalk tank. Especially for large projects that require a large number of lines to be marked.

In order to achieve good marking for accurate reading it is very important to fill up the marker tank, close correctly and shake. In this way you can be sure that the cord wound on the reel is impregnated with the chalk.

Once you have stretched the cord and positioned it with the reference marks, tighten and pinch the cord as if it were a guitar cord against the support and thus leave the mark of the chalk line on the surface.

As an additional use, the MASTER line marker can be used as a plumb bob.

The RUBI brand is known for the great durability and quality of its tools. For more than 65 years, RUBI has only manufactured products of high durability and strength, to give the best performance in the toughest working conditions and adapting to the demands of each market.


  • Ideal system to quickly draw straight lines between two points of the wall or floor.
  • Aluminum carcass
  • Served with a powder bottle tracer of 120 gr.
  • Length of line: 30 m.

References and models for MASTER line marker

Where to buy

MASTER line marker
  • Ref. - 70928
  • EAN-13 - 8413797709285
  • Units per box - 6
  • card_giftcardPoints: 5
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