Back-when, when asked about exposure for a particular situation I would stick my index finger in my mouth, remove it and as some would do to determine wind direction, would say: "125th at ∱8"...

Quizzical looks would follow.

Reformed Photojournalist
Former USAF Phlyin' Photog
"The brave ones shot bullets, the crazy ones shot film!" --Joe Longo, WW-II Army Combat Camera