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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 300mm (Metric) including Pencil

Original price £33.29
Current price £29.13

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 300mm from an edge.
      • The T-Rule has an anodised aluminium fence keeping the ruler straight when marking out long lines

      Available in 150mm, 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.

        We are Shipping to the EU

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        Customer Reviews

        Based on 69 reviews

        If you require accuracy then this is the tool for you. If you want to draw a line at 9.75mm then it’s easy as can be.

        Excellent service & quality tools

        Bought this & the pencils for hubby at Christmas. He’s over the moon with it. Me? I’d prefer a new handbag but best to keep the worker happy :)

        Unrivalled accuracy

        I might actually make some money on the time consuming joinery now I have this to mark out. So quick and literally marking on the line so aiming the saw/chisel becomes a doddle.
        It seems expensive but it's the last ruler you'll buy! Service and shipping tiptop as always.

        Inca rule

        FAB U LOUS .
        I use it for sewing and paper crafts. Absolutely wonderful. Will never use another sort of ruler ever again.
        So accurate for my book folding.

        Impressive T-rule

        The ruler is quite impressive to use. There is a learning curve on how to apply right pressure on the pencil so you don't break the 0.5 mm lead. Personally I need magnify glasses to see the holes in the ruler, it's easy to put the pencil in the wrong hole (the are small and must be so). Used it a couple of times and it's growing in my opinion. Highly recommended.