Science Fair 100 kHz FREQUENCY STANDARD Radio Shack Kit #28-140 MARKER GENERATOR 

100kHz Frequency Standard

Science Fair Electronic Kit

This is a NEW & Unassembled kit!

It was opened to check the parts list and take pictures. All parts are included in the box which doubles as the project board. I can't find a date in the instructions but I would estimate this is from the late 1960's or early 1970's.

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