Safely check the methane content in the air beyond roof support with the Methane Detection Probe. The probe is very maneuverable even at full extension which is 47 feet. Featuring an aluminum five section extending pole with locking collars, and an extendable instrument snout, the Methane Detection Probe from Johnson Industries is a versatile tool that will help ensure the safety of your facility and your employees. This Methane Detection Probe can be steered to an exact location at the face of a coal mine, assuring accuracy, quality, and safety for your facility and mining site.