I have a Hasler Speed Indicator (tachometer) made in Berne, Switzerland. It has the serial number 81207 and is in a case with attachments for reading rpm as well as lineal feet per minute. A representation of the engraved label is shown above. However, it does not work. I would like to know if anyone can tell me how to get it repaired.
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Rev. Alvin Jeske, 28497 Owl Dr., Browerville, MN 56438