Trigger with vertical potentiometer and one switch (old model) is a control element used in TIG welding chucks. Thanks to the built-in potentiometer, it allows precise adjustment of welding parameters directly on the chuck, which increases control over the process. The vertical location of the potentiometer provides convenience of use, and the robust design guarantees durability even in harsh working conditions. This model is compatible with selected TIG chucks, providing convenience and precision welding.