INCRA - Rule - Precision Straight 300mm (Metric)

Regular price £29.95


INCRA - Rule - Precision (Straight) 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.

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.

    Metric Precision Rule (Straight) - 300mm

    • INCRA'S Micro-fine patented marking holes at every 1mm whilst the four centre rows of holes are at 0.25mm increments along its entire length
    • Draw a short line at any mm spacing using the outside slots or by selecting the centre rows and twisting your mechanical pencil you can spot mark any measurement to 0.25mm, 0.5mm, 0.75mm  or 1.0mm; this gives these rules the best accuracy you can achieve when marking out.

    Also available in Metric - 150mm and Imperial - 6" and 12" versions plus 10"/250mm (Dual Scale).

    Precision (Straight) Rules are also available in INCRA Rule Sets - 300mm.


    Customer Reviews

    Based on 8 reviews
    Precision instrument for bookbinders

    I use this in bookbinding. It removes the risk of parallex when marking up the spine and sewing stations. Because it is so thin it is perfect for trimming end papers against the book block. On larger books you can bend it over the spine to get an accurate measurement. Box making is far more accurate using the Incra ruler. Love it. Arrived promptly and Woodworkers Workshop were very helpful when I contacted them about the delivery.

    Precision measure

    When building a 4.5m x 2.7m bookcase using mini fix and adjustable shelving precision measurements are essential and this helps a great deal when used in conjunction with spacer bars.


    I brought this for my husband for Christmas and he loves it. It was much thinner than I expected it to be but he is happy!

    Bought for a present

    I have bought this along with a couple of other bits for my hubby for Christmas, as of yet he hasn't used, but know his want for Incra rules, they will certainly do exactly what he wants and make him a very happy man this Christmas.

    Amazing bit of kit

    I purchased this ruler to help me with my hobby that requires accurate measurements. This ruler is amazing, it's light, flexible and more importantly allows me to measure out, even the smallest of increments with easy. A real must for anyone who needs to measure accurately and with easy.
    I had a phone call after placing my order, not only to tell me there would be a small delay on sending my ruler but also to thank me for the order and they were sorry for any inconvenience the wait may have caused. A truely genuine thank you and apology.
    Will definitely use again in the future.


    Shipping - our service is free on orders over £85 and only £5.95 on orders under £85 within the UK Mainland, Northern Ireland, Highlands & Islands!

    We aim to dispatch all orders placed before 2pm Monday-Friday on the same working day.

    We do not process orders over the weekend, so if you place your order after 2pm on Friday and throughout the weekend, we will send it to you on Monday. 

    Standard UK Service is UPS Standard, or Royal Mail (either First Class or Tracked & Signed for) and costs £5.95 (non-UK mainland and remote areas may take a little longer).

    On rare occasions, extra shipping charges may apply when delivering to non-UK mainland and remote areas and our Sales team will contact you on receipt of your order.

    UK Mainland, Northern Ireland, Highlands & Islands Delivery

    For order values under £85, delivery is £5.95 and for orders over £85 delivery is free of charge, and will be shipped using our Standard Service.

    UK Offshore Delivery

    Channel Islands and Isle of Man - £19.95 on all orders

    International Shipping

    All European orders are subject to our Standard European Shipping Charge of £14.95.

    Orders are sent using UPS Standard, or Tracked & Signed For Royal Mail.  Delivery times may vary – please allow up to 7 days depending on your region. We ship to the following countries:-

    Austria, Belgium, Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Netherlands, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden.

    Norway, Switzerland & Greece

    Standard Charge £19.95 on all orders.

    If your country is not covered by these shipping options, please contact us to get a quote.

    Collection from Wood Workers Workshop.

    If you prefer you can collect your order from us at Wood Workers Workshop (by pre-arranged appointment, Mon-Fri 09:00-4:30) to save on delivery costs; please contact us to arrange.