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Cosmanized WoodRiver Mortise & Tenon Gauge

Cosmanized WoodRiver Mortise & Tenon Gauge
  • Cosmanized WoodRiver Mortise & Tenon Gauge
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  • Mortise & Tenon Gauge
  • Mortise & Tenon Gauge

Cosmanized WoodRiver Mortise & Tenon Gauge

33 reviews

Regular price $0.00 USD $139.95 USD Sale

14 left in stock.
Full Description
Customer Reviews

My "Cosmanized" WoodRiver Mortise and Tenon Gauge combines my Mortise and Tenon attachment with a "Cosmanized" WoodRiver marking gauge. 

  • Designed for marking out a mortise & tenon joint in furniture making.
  • Width range between the two cutters: 3/16 inch to 11/16 inch wide.
  • Works best for marking out cuts between 1/4 inch to 5/8 inch wide.
  • Designed primarily for marking out the tenons but works for the mortises as well.
  • Place your mortise chisel between the cutters, snug up the cutters to the chisel sides, using the knurled handle lock the cutters in place, remove the chisel.  Now your gauge perfectly matches the width of your chisel.
  • When laying out tenons, the bevel / waste side of the gauge is perfectly located on the "waste" side of the line.
  • When laying out mortises, the bevel / waste side of the cutter is located on the "keep" side of the line.
  • Rob recommends laying out the mortise using just one line with a standard marking gauge, instead of this gauge.  The reason for this is it is much easier to register your mortise chisel to one line verses two lines when chopping.  
  • A brass knurled locking handle

  • An O-1 hardened cutter.

Customer Reviews

Based on 29 reviews Write a review
Customer Reviews
4.9 Based on 32 Reviews
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David B.
United States

Just trying to keep up with that Cosman ingenuity!!!

My competence went up a notch.....

Miguel M.
United States United States

Another great tool.

Works great for laying out both the mortise and the tenon. High quality parts. Comes apart easily for sharpening both cutters.

Christopher D.
United States United States


Great addition to the shop. Thanks for all you do!

Matt E.
United States United States

Great tool and very well made!

I’m in the process o building another Morris chair and this marking gage is proving it’s worth in both ease, accuracy and repeatability with every joint I lay out. Worth every cent in my opinion! Rob Cosman's Mortise Gauge Attachment Review
Germany Germany

Nice Marking Gauge

The product is very precise and easily adjustable. It is very handy and high quality. I´d definetly recommand it.