A rare WW1 period Jaeger Type AM aircraft tachometer.
Circa - 1916.
Serial No - 25873.
As fitted to a variety of French aircraft of the period. In excellent original
condition with clear dial, needle and beveled glass.
A different variation to the "Type AM" (Aviation Militaire) series of instruments,
having a slightly higher rev range to 3,000 rpm - so also suitable for large
engine motor cars of the period.
The mechanism operates with needle returning to zero; it also has all four
fixing lugs in place.