Since 2007, Switchrite has helped prevent derailments and saving customers from spending on seemingly endless derailments. Using Switchrite Switch Indicators increases the visibility of switch position from over 1/4 mile away, using only reflected light. The Switchrite 350 is located at the position crews should be looking, near the switch points. Our units are sensitive to 1/4" movement of the #1 rod (the same as the electrical standard). Switchrite is the only mechanical switch indicator that will show a previously run through switch. Come see us and see how we can help you!