Note 1: Stroke speed is usually expressed as a number of strokes per minute. When the system scans in both directions, the stroke speed is twice this number.
Note 2: In most conventional mechanical systems, the stroke speed is equivalent to drum speed[?].
Source: from Federal Standard 1037C and from MIL-STD-188
... and wet, with much mist and fog; spring and autumn are windy
mostly barren rock
Atlantic Ocean 0 m
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