Plumb bobs


Plumb bobs use the law of gravity to indicate if the position of a construction element is truly vertical. The principle on which the operation of plumb bobs is based is very simple: the line suspended with the weight in its lower part should be vertical and perpendicular to any other level plane through which it passes.

Today, plumb bobs remain one of the most important and widely used tools in the construction industry.

That is why RUBI has a selection of models which, without renouncing the traditional use, guarantee proper operation and ensure product quality.

RUBI plumb bobs are made of bichromate steel, to ensure good corrosion resistance, given the working conditions to which the product will be subjected.

The geometry of the weight of RUBI plumb bobs means one of the most traditional models, the cylindrical one with a pointed end, is still an accurate indicator of the centre of gravity. Weighing 600 gr., RUBI plumb bobs are highly reliable and very resistant.

The dollies on the RUBI plumb bobs are made of wood and are varnished to make them more resistant to working in adverse conditions.

The 5 metre long line on the RUBI plumb bobs is made of high quality cotton to withstand on-site working conditions.

This range of products, like other ranges in our catalogue, is designed to save users time and increase the efficiency of their work. At RUBI we are aware of the importance today of efficiency and time savings, so our product development managers are very focused on these concepts when designing new tools.


  • Length of line: 16.4 ft. (5 m).
  • Includes wooden dolly.
  • Packed in blister.

References and models for Plumb bobs

Where to buy

600 g Plumb bob
  • Ref. - 70964
  • EAN-13 - 8413797709643
  • Units per box - 6
  • card_giftcardPoints: 4
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