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Due to the current COVID-19 situation deliveries may take longer than normal, click here for the latest update.
Due to the current COVID-19 situation deliveries may take longer than normal, click here for the latest update.

INCRA T-Rule 150mm (Metric) including Pencil

Original price £21.63
Current price £18.29

 INCRA's T-Rule offers unparalleled accuracy, having patented marking holes to mark in rather than just etched graduations, these Rules allow you to mark out precisely with no risk of error.  It's very easy to draw exact lines in either direction.

Just select the slot or hole, insert a 0.5mm mechanical pencil, and mark the measurement with complete accuracy - unmatched in the industry of Marking Rules!

One of the fundamental errors woodworkers make when measuring out is marking a line then marking the next measurement line from the first; compound errors soon build up - these Rules leave those kind of mistakes as a thing of the past.


    • Free INCRA Pencil
    • INCRA's Micro-fine patented guide holes and slots at every 0.25mm, 0.5mm, 0.75mm or 1mm, from 0 to 150mm or 300mm. They also offer 0 to 50mm height marking slots on the end in millimetres.
    • INCRA's Micro-fine patented guide holes and slots at the outer edges of the T-Rule's top and bottom are spaced every 1mm, whilst the four centre rows of holes are at 0.25mm increments.
    • You can draw a short line at any mm spacing using the outside slots
    • By selecting the centre rows and twisting your mechanical pencil you can spot mark any measurement to a full mm or 0.25mm, 0.5mm, 0.75mm or 1mm, before reaching the next full mm - this gives these rules the best accuracy you can achieve when marking out.
    • The end reference bar can be easily removed or slid to to the left or right hand side of the rule allowing marking out tight into a corner of a cabinet or joint. It is also great for marking precise lines parallel up to 150mm from an edge.
    • The T-Rule has an anodised aluminium fence keeping the ruler straight when marking out long lines

    Available in 300mm, 6" and 12" lengths.

      FREE UK Delivery on all orders over £40 within the UK Mainland, Northern Ireland, Highlands & Islands. Only £4.50 on orders under £40.

      Order before 2pm and we'll aim to despatch your order the same day, Monday to Friday. Please allow 1 to 2 working days for delivery. For the lastest COVID-19 delivery information please click here.

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      Customer Reviews

      Based on 96 reviews
      Beautifully made bit of kit.

      I have to say that this square is beautifully machined with a red anodised stock and a stainless-steel marking rule. The graduations are amazing, I am having trouble with leads snapping, but thats just me, I'm going to get some slightly harder ones, and I am sure things will improve.
      The square arrived sooner than I expected and I would certainly recommend Wood Workers Workshop.

      Precision marking

      Bought along with bend rule , both provide ability to mark work pieces with increased precision

      Don't believe the hype

      I thought this was going to be very useful to me, but when I began to use it I realised i didn't need it.
      There's a lot of holes, you become disoriented looking for the one you need.
      The lead is so thin, it just wears down quick.
      Nicely made and for anyone who can use it without getting dizzy will love. For me though it's going in a drawer somewhere.


      Been wanting one of these for some time - don't know why I've waited so long. Super little T square with lots of holes for the supplied 0.5mm pencil. Wish I'd bought the angled rule at the same time.


      Much like its longer cousin, the 300mm, it is absolutely brilliant for what it was designed for, I use it practically everyday. Well made and accurate. Thoroughly recommend it and its kind.