Drift is a simple and general tool designed to measure inside size of casing, tubing, drill pipe and other pipes. Drifts are available in casing drift and tubing drift.
|Type||Casing/Tubing Outter Dia.(in)||Drift Length (in)||Drift Min.diameter (in)|
|Casing Drift||<=8 5/8||6||d-1/8|
|9 1/8~13 3/8||12||d-5/32|
|Tubing Drift||<=2 7/8||42||d-3/32|