Infrared Temperature Gun with Laser Sight.  Non-contact.  LCD Display.  Red laser pointer to aid in aiming.  Auto power off.  Temp hold.  Reads in either F or C.  Range -58 °F to 716.

Since this is no touch, you can check the temp of yeast washing and yeast rehydration water and your starter wort without the risk of infection.  I find mine particularly useful for rehydrating yeast.

Infrared thermometers should not be considered a direct replacement for a conventional thermometer.  A quality IR thermometer will give you a close approximation of surface temperatures.  Note that steam seems to throw off readings.  Uses include: Contained yeast rehydration water, chilled wort or starter temperature, kegerator, fermenter or fermentation area and beer tasting samples.  If you’re looking for a great conventional thermometer consider Thermapen ONE – Hands on Review

Digital Non-Contact Laser IR Thermometer -50C to 380C/ -58 °F to 716 °F Two Display