Expensive items, those J le C clocks. In our RAAF Canberras, I had the job of replacing normal securing screws with ‘break-off’ head screws: this to prevent them being half-inched.

Apparently they were popular for time-of-trip measurements in long journeys by car…

Bloody awful job removing the screws later when the clock had to be removed by yours truly, an instrument basher!

Bri