http://www.aikencolon.com/flir-t420-thermal-imaging-infrared-camera

The Flir T420 Infrared Camera has 320 x 240 (76,800 pixel) Resolution and gives you maximum ?exibility and ef?ciency for hard working professional thermographers that have demanding workloads.

Look high or low for hard to find problems very comfortably for long hours with the T420, one of thermography's most flexible and ergonomic hand-held infrared cameras. The Flir T420 features a rotatable optical block which allows you to aim the lens down or up along a 120 degree axis as it keeps the display at a comfortable eye level. You can scan any target from difficult angles with no stress to your neck and back. Also enjoy new features such as a programmable button, 2 cameras (visible light), a 60 Hertz frame rate & a much faster core processor so you can handle huge workloads.

T420 Features
Rotatable Optical Block - Allows you to aim the lens down or up along a 120 degree axis as it keeps the display at a comfortable eye level.
MSX Enhancement is a new onboard Dynamic Multi-Spectral Imaging enhances visible light spectrum definition withreal time Infrared images for phenomenal detail & instantaneous location orientation, along with quality so high, you don't need separate photos for your reports *(T440 & T640 only)
Picture in Picture & Thermal Fusion - Blend visible and thermal infrared images onscreen so you can clearly identify targets; use the fusion threshold for isolating hotspots in a particular scene
Manual and Autofocus - Use the manual control option or push button fast autofocus to capture accurate images
Continuous Autofocus - Thermography's 1st fully automatic focus keeps images extremely clear wherever you are aiming; accuracy and clarity couldn't be easier *(T640 only)
Annotation - Add text comments or voice to your images or utilize the touchscreen for sketching drawings and notes; automatically include extra measurements using Bluetooth w/ Extech MeterLink moisture and clamp meters
Sketch on IR and Visual - Quickly draw pointers and circles on your image to highlight a special area of interest with the touchscreen *(T440 & T640 only)
Compass - Add the camera's pointing direction documentation to FLIR T640 bx and T440 bx images
GPS - Add your location data automatically to FLIR T640 and T620 images to include in your report
FLIR Tools Mobile - The newest mobile application for Android and Apple connects your device to FLIR T-Series infrared cameras for quick image sharing, processing, and transfer as well as live streaming video & remote control