Example: air traffic controller
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Instruction Manual Fisher 1051-1052 Style H/J Sizes 40-60 ...
www.emerson.comAdditionally, a top‐mounted handwheel can be applied for infrequent service as a manual handwheel actuator. For more frequent manual operation, a side‐mounted handwheel actuator is available. Also, an adjustable up travel stop can be added to limit the actuator stroke in the upward direction, or an adjustable down travel stop can be added to