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Fieldpiece SPK3 Thermometer Folding ROD

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SKU: fp_spk3 Categories: , Brand:

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The Fieldpiece SPK3 Thermometer Folding ROD with Dual Temperature and 8:1 Infrared Gun is a great tool to take induct, ambient quickly , and register temperatures.  It’s a handy pocket thermometer to assess a system soon.  The ROD has a sharp, narrow tip to insert into the ductwork easily, and the hanging hooks allow you to take hands-free measurements.  The bright back lite display flips between the IR and ROD measurements, so readings are always easy to view.  Plus, this handy tool quickly calculates T1 – T2 across the IR and ROD modes or a combination of the two. Use the SPK3 IR and Rod Thermometer to measure swiftly surface temperatures or check the dry bulb inside the ductwork. It has an 8:1 field of view at 16 feet away; you see the average temperature of a 2-foot circle. The backlit display automatically flips into ROD mode for hanging on duct walls.

The Fieldpiece SPK3 IR Laser and Probe Thermometer feature a built-in rod thermometer for close-up duct temperatures and an IR thermometer for more extended range temperatures. It easily hangs on almost any vent register for hands-free measuring. The display flips depending on the mode. In ROD mode, the show can be seen when hanging. Hang the SPK3 to your registers or ducts. The hanging hook secures your SPK3 for easy hands-free temperature measurements, even on plastic vents. Clip to your front shirt pocket for easy storage, ready to use in the field.


  • (1) Fieldpiece SPK3 thermometer
  • (2) AAA batteries


  • Fieldpiece SPK3 IR and Rod Laser Thermometer
  • Great to quickly assess a system
  • Folding ROD for in duct measurements
  • 8:1 IR for register and ambient temps
  • Hands free in-duct measurements
  • Pocket Friendly
  • Quickly calculates T1 – T2 across both ROD and IR
  • MIN/MAX Function Features
  • Automatic Data reserve feature
  • Backlit LCD


Fieldpiece SPK3 IR and Rod Laser Thermometer
Probe length : 94mm (~3.75”) long
Operating environment : 32°F to 104°F (<90% RH)
Storage environment : 14°F to 140°F (<70% RH)
Battery : 2 x AAA (installed)
Battery life : 40 hrs (IR), 750 hrs (ROD)
Auto-off : 3 min, 15 min (T1-T2 mode)
Range : -20°F to 932°F (-30°C to 500°C)
Best resolution : 0.5°F/0.2°C
Accuracy : (@73°F, <80%RH) ±1°F(±0.5°C), (32°F to 122°F); ±2°F(±1.0°C), (<32°F, >122°F)
Field of view (D:S) : 8:1
Response time : 0.5 seconds
Wavelength : 8µm to 14µm
Emissivity : E=0.95
Range: : 40°F to 257°F (-40°C to 125°C)
Best resolution : 0.1°F/0.1°C
Accuracy : ±1°F(±0.5°C), (32°F to 122°F); ±2°F(±1.0°C), (<32°F, >122°F)
Response time : 20 seconds


Q & A

how to change temperature reading on a fieldpiece spk3

Hold T1-T2 and M/m to toggle °F and °C.