THERMOMETER The two available models are suited for use in different applications: the long-focus FT3700-20 for measuring temperature over a wide area, and the long-focus/ narrow-field FT3701-20 for measuring temperature at a more precise point. In response to customer feedback indicating that the single-point laser marker used by the previous product made it difficult to identify the measurement range, HIOKI has incorporated a two-point laser marker into the FT3700-20 and FT3701-20 to provide users a clear indication of the measurement range. A display backlight further boosts convenience by improving visibility in the dark locations where temperature measurements are often made. Advanced Features Two versions to suit your unique applications ( 1) FT3700-20: Long-focus design is ideal for measuring temperature over a wide area. At a distance of 1 m, the FT3700-20 measures the average temperature inside a circle with a diameter of 83 mm. ( Distance: diameter of field of view = 12: 1)  ( 2) FT3701-20: Long-focus/ narrow-field design is ideal for measuring temperature at a more narrow point. At a distance of 1 m, the FT3701-20 measures the average temperature inside a circle with a diameter of 52 mm. ( Distance: diameter of field of view = 30: 1)  Two-point laser marker for clear identification of the measurement location Backlit display for convenience when using the instrument in a dark location