Not too long ago I asked about the difference between the Veritas and the Glen-Drake Tite-Mark wheel gauges.
Most people did express a preference for the Tite-Mark over the Veritas. There was not much explanation other than "it worked better."
Since then, I have acquired one of each.
There is an old Stanley #97 marking Gauge in the image just because there happened to be one close at hand.
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One point of confusion for some on these gauges is they are often referred to as wheel gauges or "pizza cutter" gauges. The wheel does not turn as the tool is scribing. They are named for the shape, not the function.
The Veritas is less expensive and has about an inch more length in the rod supplied with the basic unit. The Tite-Mark is available with a 9" rod and numerous other accessories to enhance its capabilities.
For the nitty gritty of the differences.
The Veritas marking gauge has an adjustment feature that first requires the tool head to be locked on the rod by tightening a knurled nut on a locking collet. My experience trying to do this one handed resulted in not getting the knurled nut fully tightened leading to slippage later. To perform a micro adjustment the large wheel then has to be turned. This can be done with one hand, but is difficult at best. The guide head is then locked with a knurled screw. The Veritas gauge has an O-ring internally to keep it from freely sliding on the shaft when the collet is not tightened. The only thing to keep the gauge from rolling off of a bench is the weight of the thumb screw. If it was a bit longer, it could actually work to deter rolling.
The Tite-Mark is locked with a thumb screw. Then a knurled cylander is turned to make fine adjustments. Finally, another thumb screw is turned to lock the setting. There is a plastic set screw to allow the user to set the free sliding tension of the head on the shaft. Another feature of the Tite-Mark is one thumb screw is long enough to keep the gauge from rolling more than one revolution when it is set down. The Tite-Mark is very easy to set completely one handed.
Specifications:
Tite-Mark total standard shaft is 7-1/4 inches. The total adjustment range of the micro adjuster is a little bit more than 3/4 of an inch.
Veritas shaft length is 8 inches. The total adjustment range of the micro adjuster is a little bit more than 7/32 of an inch.
Since one would normally start with the micro adjustments in the center of their respective ranges this would make the Veritas correction ability to be about 1/16 of an inch compared to the Tite-Mark's 3/8 of an inch.
I did not measure the threads. The threads for the micro adjustment of the Veritas are finer than the threads on the Tite-Mark. I do not see this as being an important difference. Over time, it could be a big inconvenience to have to make a full turn to make a 1/32 inch change. There is also the difference in the range of adjustment. Being able to move more could be helpful in many situations.
The Tite-Mark is a little more than twice the cost of the Veritas.
The Tite-Mark definitely feels like it is a lot more than twice as easy to use than the Veritas.
A tool that is more comfortable to use and is easier to use is more likely to be used.
jim