by raimundo » 21 Mar 2010 9:16
Lipstick, I use it to mark the face of a bolt to check where it touches the strike plate, and when installing a lock to mare where to drill for the strike plate. dosent work good in cold weather. lipstick has the ability to transfer to another surface when its warm.
Its impossible to see inside the closed door frame, but by marking you can get the info.
Wake up and smell the Kafka!!!