Built-in laser pointer identifies target area -Backlighting illuminates display for taking measurements at night or in areas with low background light levels -High resolution of 0.1° up to 199.9° -Automatic Data Hold when trigger released -Adjustable 0.95 emissivity covers 90% of surface applications -Auto power off -CE Mark -1 Year Warranty Model 42510 (Wide Range Mini IR Thermometer) -Compact thermometer with wide temperature range from -58 to 1000°F (-50 to 538°C) -Audible and visible over-range indicators -Weight: 6.4 oz (180 g) -Dimensions: 3.2x1.6x6.3" (82x42x160 mm) Model 42540 (High Temperature IR Thermometer) -Widest temperature range from -58 to 1400°F (-50 to 760°C) -High 16 to 1 distance to target ratio measures smaller surface areas at greater distances -Weight: 10.2 oz (290g) - Dimensions 3.9x2.2x9" (100x56x230 mm) Features for 42545: -Built-in laser pointer identifies target area -Backlighting illuminates display for taking measurements at night or in areas with low background light levels - High resolution of 0.1° up to 199.9° - Automatic Data Hold when trigger released - Adjustable 0.95 emissivity covers 90% of surface applications -Auto power off -Wide temperature range from -58 to 1832°F (-50 to 1000°C) -High 50 to 1 distance to target ratio measures smaller surface areas at greater distances - Weight: 10.2 oz (290g) -Dimensions: 3.9x2.2x9" (100x56x230 mm)