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Open Monday to Friday - 8.30am to 4.30pm, same day dispatch when you order before 2pm
Open Monday to Friday - 8.30am to 4.30pm, same day dispatch when you order before 2pm

INCRA T-Rule 150mm


 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.


    • 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 millimeters.
    • 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 £30 within the UK Mainland, Northern Ireland, Highlands & Islands, for a limited time only*. Only £5.95 on orders under £30.

      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.

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      Customer Reviews

      Based on 67 reviews
      What a beautifully made piece of metal

      What a beautifully made piece of metal. It’s very accurate and very helpful but you do need to have a pair of glasses on

      Just so useful!

      Really useful,I've only had it for a few weeks and find that it is the "go to" making tool for drawing cutting lines etc. Wish I had bought one years ago, fine pencils are a must though.Woodworkers workshop have again supplied a great piece of kit at a good price.

      Very Accurate

      Best bit measuring equipment I have bought for ages, very well made, delivery packaging was excellent

      Incra T-rule

      Delivery and packaging excellent.
      Haven’t used it in anger yet but initial trial show’s it to be very accurate but more importantly consistent.
      Just the job for someone who’s eyesight isn’t what it was.

      "Accuracy Redefined"

      Best £25 I ever spent on measuring equipment. Easy to read and use for super accuracy.