The Sliding Bevel Guide

The sliding bevel is a layout tool which is essential for accurate and precise woodwork. It is made up of two parts, the beam and the stock which can both move on an axis. These can be fixed using a wingnut to allow you to transfer an accurate angle marking.

The stock can be made from wood, plastic or metal. The beam is usually made from tempered spring steel and can vary in size. The locking system can vary, sometimes it is a wingnut which is tightened by hand, or sometimes it is sunken screw which needs a screwdriver. Both are very effective locking systems, however with the screw it allows you to lay the stock flush against the wood on both sides, whereas the protruding wingnut doesn’t allow for this.


This is used in the same way as the combination square, however unlike the combination square, it can be set at any angle. The tool is often used alongside other tools such as the layout knife to create precise markings for joints.


Stock- The heavier part which is used to rest against the edge of the wood

Beam- The steel blade which can be moved to change the angle at which the guide is set

Other Names:

  • Sliding T bevel
  • T bevel
  • Bevel gauge

Parts of The Sliding Bevel

Without Highlighting

With Highlighting

Pressure Plate


Locking Bolt

Locking Lever


Further Reading

To read more on this we recommend the following from Paul’s blog:

Bahco Sliding Bevels Keep on Sliding After Lockdown

Buying Good Tools Cheap- Sliding Bevel


  1. Byron Stephen Wiseman on 2 January 2019 at 9:58 pm

    Thank you for this Series as they are excellent!

    Did Bahco ever get back with you about their sliding bevel not locking properly?

    Have you tried the Japanese Swinwa bottom locking bevel?

    Many Thanks and Happy New Year,

    • Izzy BergerTeam Member on 4 January 2019 at 3:06 pm

      Hi Stephen,

      Thank you for your message.

      No Bahco didn’t get back to Paul. He has used the Japanese Shinwa.

      Kind Regards,

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