Nice, Tom.

Two things to keep in mind.

1) the FOV (field of view). Generally, we have to get pretty close up to a target to measure it's temperature accurately. For example, if your FOV is 8:1 then You must be within 8" to measure a target "1 diameter. If you are further away, or the target is smaller than 1" they the measurement will be an average of the enlarged area.
2) Get an emisivity table so you can get an idea of what materials will emit radiation at a high enough percentage to be accurate for your purpose.

Here's a table of common materials. Note that anythin less than .60 is usually not a candidate for measuring temperature with IR. See shiney metals (polished Aluminum 0.05) This would act like a mirror and the IR thermometer would indicate the temperature of you (holding the thermometer) or some object(s) behind you.

Shov

Aluminium: anodised
0.77

Aluminium: polished
0.05

Asbestos: board
0.96

Asbestos: fabric
0.78

Asbestos: paper
0.93

Asbestos: slate
0.96

Brass: highly polished
0.03

Brass: oxidized
0.61

Brick: common
.81-.86

Brick: common, red
0.93

Brick: facing, red
0.92

Brick: fireclay
0.75

Brick: masonry
0.94

Brick: red
0.90

Carbon: candle soot
0.95

Carbon: graphite, filed surface
0.98

Carbon: purified
0.80

Cement:
0.54

Charcoal: powder
0.96

Chipboard: untreated
0.90

Chromium: polished
0.10

Clay: fired
0.91

Concrete
0.92

Concrete: dry
0.95

Concrete: rough
.92-.97

Copper: polished
0.05

Copper: oxidized
0.65

Enamel: lacquer
0.90

Fabric: Hessian, green
0.88

Fabric: Hessian, uncoloured
0.87

Fibreglass
0.75

Fibre board: porous, untreated
0.85

Fibre board: hard, untreated
0.85

Filler: white
0.88

Firebrick
0.68

Formica
0.94

Galvanized Pipe
0.46

Glass
0.92

Glass: chemical ware (partly transparent)
0.97

Glass: frosted
0.96

Glass: frosted
0.70

Glass: polished plate
0.94

Granite: natural surface
0.96

Graphite: powder
0.97

Gravel
0.28

Gypsum
0.08

Hardwood: across grain
0.82

Hardwood: along grain
.68-.73

Ice
0.97

Iron: heavily rusted
.91-.96

Lacquer: bakelite
0.93

Lacquer: dull black
0.97

Lampblack
0.96

Limestone: natural surface
0.96

Mortar
0.87

Mortar: dry
0.94

P.V.C.
.91-.93

Paint: 3M, black velvet coating 9560 series optical black
@1.00

Paint: aluminium
0.45

Paint, oil: average of 16 colours
0.94

Paint: oil, black, flat
0.94

Paint: oil, black, gloss
0.92

Paint: oil, grey, flat
0.97

Paint: oil, grey, gloss
0.94

Paint: oil, various colours
0.94

Paint: plastic, black
0.95

Paint: plastic, white
0.84

Paper: black
0.90

Paper: black, dull
0.94

Paper: black, shiny
0.90

Paper: cardboard box
0.81

Paper: green
0.85

Paper: red
0.76

Paper: white
0.68

Paper: white bond
0.93

Paper: yellow
0.72

Paper: tar
0.92

Pipes: glazed
0.83

Plaster
.86-.90

Plaster: rough coat
0.91

Plasterboard: untreated
0.90

Plastic: acrylic, clear
0.94

Plastic: black
0.95

Plastic: white
0.84

Plastic paper: red
0.94

Plastic paper: white
0.84

Plexiglass: Perpex
0.86

Plywood
.83-.98

Plywood: commercial, smooth finish, dry
0.82

Plywood: untreated
0.83

Polypropylene
0.97

Porcelain: glazed
0.92

Quartz
0.93

Redwood: wrought, untreated
0.83

Redwood: unwrought, untreated
0.84

Rubber
0.95

Rubber: stopper, black
0.97

Sand
0.90

Skin, human
0.98

Snow
0.80

Soil: dry
0.92

Soil: frozen
0.93

Soil: saturated with water
0.95

Stainless Steel
0.59

Stainless Plate
0.34

Steel: galvanized
0.28

Steel: rolled freshly
0.24

Styrofoam: insulation
0.60

Tape: electrical, insulating, black
0.97

Tape: masking
0.92

Tile: floor, asbestos
0.94

Tile: glazed
0.94

Tin: burnished
0.05

Tin: commercial tin-plated sheet iron
0.06

Varnish: flat
0.93

Wallpaper: slight pattern, light grey
0.85

Wallpaper: slight pattern, red
0.90

Water:
0.95

Water: distilled
0.95

Water: ice, smooth
0.96

Water: frost crystals
0.98

Water: snow
0.85

Wood: planed
0.90

Wood: panelling, light finish
0.87

Wood: spruce, polished, dray
0.86