H-2 Internal Unit
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The internal unit for the style H-2
searchlight signal is almost identical to the one used in the style H signal.
The outer doublet on the H-2 unit has more curvature being designed to match
the smooth outer doublet of the H-2.�
There is a notation on the top of each mechanism instructing the
signal maintainers which style of signal the unit fits.� The notation reads: Adjusted for style
�H-2� signal.� Do not use in style
�H.� While most internal units I have come
across have glass bottom covers, some have had plastic bottom covers.� I assume the manufacturers and servicers
began using these when quality plastics became available. |
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