The SPK3 is a great tool to quickly take in-duct, ambient, and register temperatures. It's a handy tool to assess a system and it fits conveniently in your pocket. The ROD has a sharp, narrow tip to easiy insert into duct work, and the hanging hooks allows you to take hands-free measurements.

• Accurately target surfaces with infrared 8:1 field of view
• View in-duct temps hands-free with temperature ROD and hanging hook
• Thermistor ROD with sharp, narrow tip for insertion into duct work
• Display flips (IR/ROD) for easy viewing
• Clips to your pocket or bag
• Max/min/Hold
• Backlight
• Quickly calculates T1 – T2
• T1 – T2 works across both IR and ROD modes