I really like the features of this marker but there are a few things that bother me. Overall it's well made and will get the job done. I really like the pen/pencil/pen attachment. The dual roller pin side is also neat and is what led me to this particular product. However, the rotating blade does not sit flush with the base like my Titlemark does. A small sink solves this problem to protect the blade during storage. The knurled locking knob needs to be slightly larger to make it easier to turn. O-rings at the foot of the measuring shaft would also be practical. This would have prevented the constant rapid translation/rotation of the rod. The gradations are nice and easy to read, although I prefer the double reading rule; metric and imperial. This unit is metric only. I use other means to set the distance than marking the sensor. A few tweaks and this product will stand out.
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