English to Russian Tech/Engineering Ships, Sailing, Maritime stern tube sealing

Subjects for measurement at the time of seal installation

Attach a wear down gauge to the aft seal and take measurements (see chapter 10.4). Measurement points of forward and aft seal, with tolerances, are as follows:

Measure gap at 4 points on the
Circumference on the forward side (use ****searcher****)
Measure gap at 4 points on the
Circumference (use searcher or wooden wedge)


Речь идет о каком-то приборе по замеру зазоров по окружности трубы.
На ум приходит только щуп - filler gauge.

Спасибо!