Calliope Pipe Mouth Marking Gauge
Description
Popular Mechanics Dec 1982 construction article for a 25 note mini-calliope. Marking gauges for the notches forming the pipe mouths of a mini-calliope. Getting an accurate measurement for the depth of the notches to be cut into the pipes is difficult. These gauges make it quite easy. Mini-Calliope Dec 1982 Popular Mechanics Part 4 - Marking and cutting the notches for the Pipe Mouths. https://youtu.be/8lz8wYm5lXc
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