Rob Cosman Marking Gauge on a wooden surface

Rob Cosman's Marking Gauge

Name: Rob Cosman's Marking Gauge
Brand: RC Woodworking Hand Tools, Inc
SKU: RCG-003
Price: 149.0 USD
Availability: InStock
Rating: 4.96 (78 reviews)

$149.00 - $149.00

$149.00

$149.00 - $149.00

$149.00

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Full Description

Customer Reviews

The second most important tool in cutting dovetails is your marking gauge. The gauge line becomes part of the finished joint. Here is why my Rob Cosman Marking Gauge will help you cut better dovetails.

Product Details:

The cutter head comes to you sharpened; designed to sever the wood fibers not crush them, leaving a crisp gauge line.
The blade is fixed in use but can be rotated to a sharper area when it gets dull. You can do this several times before having to resharpen.
The rod is approximately 7-1/2 inches (190mm) long, creating a useful marking depth of approximately 5 inches (127mm).
The head is turned from a solid brass billet and has a large knurled locking knob for easy to tighten.
The reference face is approximately 1-3/4 inch (45mm) in diameter, is flattened to within .0005 inch (.01mm) and a flat section is milled into the edge prevent it from rolling.
The handle is made from a wood fiber and resin composite, that is strong, impervious to moisture and takes a high polish.
The 1/2 inch (13mm) diameter cutter head comes to you already sharpened and ready to use; not dull like most marking gauges on the market today.
Extra cutter heads are available in 3/8 inch (9.5mm), 7/16 inch (11mm), and 5/8 inch (16mm) diameters.

Beautiful and effective

Modern marking gauges are superbly effective compared to the ( many ) older classic designs. I admit to having more marking gauges than any sensible human would ever have, wooden ones with pins and knives and holders for pencils, micro-adjustable disc models like this one, shop-made versions that are not as good as commercial ones. The Rob Cosman gauge is a solid competitor for the best anywhere, though it depends somewhat on what you want. The 1/2 inch cutter is aggressive and makes a cut you can trust to put a chisel into, but for longer reaches you have to be careful to keep the rod/axle parallel to the face of the wood. It has no micro adjust, but on the whole that saves you time. It is superbly made, a pleasure in your hand. The flat side helps save it from damage or destruction when it rolls off your bench onto whatever your shop floor is made of because you idly put it down and then started banging on a chisel. It is quite heavy in your toolbox if you are going anywhere, but it feels super good in your hand. Just looking at it reminds you to do skilled work, because its grace is what gives it beauty. The same thing is true of that walnut or cherry or oak or ash you are making into something beautiful.

Solid Piece of Craftsmanship

Great marking gauge.

Does Rob make anything that isn’t top quality?

Great tools

Just like every tool made by Rob and his tool company, this set of screws are of the highest quality.

Rob Cosman Marking Gauge

I recently received my Cosman marking gauge and couldn’t be happier with it. The build quality is outstanding, with excellent balance and an exceptionally smooth feel in use. The cutter is very sharp, and once the knob is tightened, the gauge locks securely without any rotation—something many other brands struggle with.

I also own a Luban gauge, which is identical to the WoodRiver. While it’s a good tool, it doesn’t compare to the Cosman, which clearly outperforms it. I’ll be purchasing a second Cosman gauge and fitting Rob’s mortise rod to the Luban to dedicate it solely to mortising.

Highly recommended.

Great Product

Perfectly functioning tool that is also beautifully built- great addition

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