The Glass-Chek PRO is suited perfectly for glass replacement, but it's perfect for many other applications as well. Whether you're installing or servicing in the field, spot checking in production, or inspecting a building, the Glass-Chek PRO simply gives you the answers you need. Hint: Need to make an offer for an architectural job and you would like to be sure if the offered film will be ok, plus being able to give technical values on a specific glazing rather than single pane? This ultimate tool will recognize all window structures.