http://www.aikencolon.com/flir-t640-thermal-imaging-infrared-camera
T640 Features
Rotatable Optical Block
MSX Enhancement (T440 & T640 only)
Picture in Picture & Thermal Fusion
Manual and Autofocus
Continuous Autofocus (T640 only)
Annotation
Sketch on IR and Visual
Compass
GPS
FLIR Tools Mobile