CRL Spectrum Detective Energy Transmission Meter Sealants It also shows the window

It also shows the window drawn approximately to scale

it has the ability to dissolve deposits found in the rough pits and ridges of the glass surface

The unit requires one 9V DC Battery

Low Ammonia Content

An epoxy coated swivel handle rotates

CRL Spectrum Detective Energy Transmission Meter Sealants It also shows the windowSimultaneously Displays Three Measurements at Once: UV Transmission, Visible Light, and Percentage of Infrared Transmission Values The Most Complete Sales Tool Tests Single, Double, or Triple Panes CRL Spectrum Detective Energy Transmission Meter provides a convincing test to show the energy efficiency of your Insulating Glass units. Three performance values are displayed simultaneously: UV Energy, Visible Light, and infrared Energy. Simple to operate