IR OPTICAL FOOTPRINT WORKSHEET Job / comparison question / relevant procedure: Instrument model / manual diagram reference: Target A: location / finish / operating state / elapsed time: A: distance / diagram spot / clear width / margin / obstructions: A: emissivity setting / reading / geometry fit or unresolved: Target B: location / finish / operating state / elapsed time: B: distance / diagram spot / clear width / margin / obstructions: B: emissivity setting / reading / geometry fit or unresolved: Comparison justified? Remaining limitations / next observation: