Fluke 63 - Switching Temperature Units; Celsius and Fahrenheit Toggle

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Operating the Thermometer
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Table 2. Surface Emissivity (cont.)
Measured Surface Emissivity Measured Surface Emissivity
Steel Clay 0.95
Cold-Rolled 0.7-0.9 Concrete 0.95
Ground Sheet 0.4-0.6 Cloth 0.95
Polished Sheet 0.1 Glass
Zinc Plate 0.85
Oxidized 0.1 Gravel 0.95
NON-METALS Gypsum 0.8-0.95
Asbestos 0.95 Ice 0.98
Asphalt 0.95 Limestone 0.98
Basalt 0.7
Paper
(any color) 0.95
Carbon Plastic
Unoxidized 0.8-0.9 Opaque 0.95
Graphite 0.7-0.8 Soil 0.9-0.98
Carborundum 0.9 Water 0.93
Ceramic 0.95 Wood (natural) 0.9-0.95
Switching ° C and ° F
Open the unit by pushing the button on the underside of the
thermometer near the trigger and pulling down and forward at the
top of the handle.
To toggle between °C and °F, slide the top switch to the
appropriate position. See Figure 2.