Laval SC-350 Inspection Camera & SC350 9" Monitor Multi-Gas Monitors The ToxiRAE Pro PID is

The ToxiRAE Pro PID is the world's smallest wireless volatile organic compounds (VOC) monitor

This is superior to  chimney

making it more efficient

1/2'' OD drive and sample lines

and the XI

Laval SC-350 Inspection Camera & SC350 9" Monitor Multi-Gas Monitors The ToxiRAE Pro PID isThe SC 350 is an ultra light, compact, camera system with the SC 166 water well camera designed for water wells, boreholes, and vertical shafts as small as 2 inches (5 cm) to 10 inches (25 cm) in diameter Additional lighting accessories are available to expand the viewing capabilities. The winch is manually operated with a collapsible handle to make it completely compact, portable and easily shippable. The brake lever allows the user to stop the reel