Yestderday you saw...
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NOT CHEESE!!!!!
Congratulations to Paul Vine [ @pictureit ] who correctly identified yesterdays object as a tool, called a profiler. It is pushed against an object and the plastic slats move up allowing the shape to be retained. The profiler can be used to reproduce the shape. My photo was taken with a piece of wooden moulding in the slats which have been pushed up to take its shape.
Photographer, writer, teacher :: Live honestly. Progress through knowledge. Achieve by teaching. Communicate in writing. Speak in pictures. Every day, improve the world a little...