Review on YARKOR Proportional Pantograph Measurements Proportions by Kristen Simpson

While the concept of this divider is good, its execution is a complete failure. First, there is absolutely no tension to hold the two pieces of spacer together (and yes, the plastic spacer/washer is intact). I can easily align the baffle with the object, but when I can't hold it in a vise, gravity just takes over and the baffle closes or opens. Because it's so loose I can't even hold it by squeezing - it's smooth, slippery plastic and just slides down on its own. Again, a great idea is implemented so poorly in production that it becomes completely unusable.