White tee, front, printed with the words Drift happens in blue beside a small signal trace

Drift Happens Tee

Every gyro drifts. The front says so; the back shows the device it happened to.

Size
From
The navigation side of Aeron
Item code
AER-DRIFT-HAPPENS-TEE

Why it's true.

Every gyroscope drifts: its reading wanders slowly away from the truth, and inertial navigation is the craft of keeping that in check. The front says so. The back shows the device it happened to.