I still cant Post a Pic but I can Describe it
I use a Digital Non Contact Thermometer !
Stated Accuracy is + or - 1 Degree !
With such a Thermometer you can Scan a large Area Quickly and get Surface Temp Readings !
Mine is a More expensive model at around 289 Dollars plus Tax US
Hopefully this link will Post
This will give you a General Idea of what I use
Mine is also a Dual Laser Unit !
I also use a Laser Rangefinder to Survey Distances across the Body of Water !
My Laser Rangefinder also has Pinseeker to Zero in on a Target with 4X Optical Zoom !
I shouldnt say this but I have Lots of fun with my Rangefinder !
It is a Fairly Strong unit and I have used it to Set Off a Radar detector in a Passing Vehicle !
The Vehicle almost always Slows Down while I am Laughing !
I also have a radar Gun ! ( Not Laser ) http://bushnellspeedster.com/
This type of device will make a Rradar Detector Scream !