ToeTal Tool makes measuring a breeze
This easy-to-read tool gives you the control needed to measure both plumb and square to the string. One of the most common errors you can make using a ruler is to not hold it square to the string. When you're not square to the string you can misread the scale by +/-1mm or more....which is a significant change in toe.
This is our 3rd version and this one has a much larger easy to read display. Plus the ability to easily switch between inches, millimeters, and fractions. When using this tool you are able to zero to the first string reading, so that when you take your second measurement that number is your toe value....no mental math.
Rob Krider of Double Nickle Nine Racing wrote a great article highlighting the ToeTal Tool. Read it here