first elevate an amount sufficient gen.

[olezya]

first elevate an amount sufficient

Как это можно перевести?

On some microscopes, the working distance of the high magnification objectives is so small that the objective extends into the maskholder opening when focused on the mask. In these cases, the microscope adapter on which the microscope is mounted is equipped with a lift mechanism. When the EXPOSURE button is pressed, the microscope will first elevate an amount sufficient to allow the objective to clear the maskholder. The mirrorhouse then moves forward into position over the mask. When the mirrorhouse reaches the foremost position, the exposure shutter opens and exposure takes place for the amount of time set on the exposure timer

[Boeing]

Микроскоп поднимется на высоту, необходимую для.....