Hotsaw Log Marking GaugeQuick Description. Custom Hotsaw marking gauge to easily mark out your personal cut lines on the log. Why it is cool. This gauge is a custom gauge and we place the marking holes exactly where you prefer your lines to be. It has 4 holes; 3 holes to mark out where you want your 3 cut lines to be and a 4th hole to mark the 150mm limit line. This gauge has several big advantages: Fully customised hole placement to suit your exact requirements. Mark the