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Clocks contain an unbreakable,
anti-magnetic cobalt alloy mainspring and an anti-magnetic
temperature compensated hairspring to ensure accuracy. Mechanical
clocks are stand-alone, time –keeping instruments which are not
affected by environmental extremes or system failure.
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Waltham clocks can be provided with
custom lighting configurations to match instrument panels and with
special dials to meet specific requirements.
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Case: Dust & moisture-proof
aluminum. Lusterless black color 37038 or federal standard 595.
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Jewels: 20-five more than required
by military specifications to ensure accurate performance.
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All Waltham mechanical aircraft
clocks are domestically produced and are certified to conform to
FAR # 52.208-1. They contain jewels produced by MICROLAP
Technologies’ Wm. Langer Jewel Bearing Plant.
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Spare or replacement parts
available
Operation and Installation
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Clocks are furnished with standard
2 ¼ inch aircraft instrument case. Instrument panel cutout
required as shown on the drawing, together with view of the
mounted clock showing interference dimensions in depth.
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Two mounting screws and two
Tinnerman nuts are available upon request. For mounting with
flange behind instrument panel, screws are secured to Tinnerman
nuts inserted into mounting holes in clock. For mounting with
flange in front of instrument panel, screws are secured to
locknuts provided in instrument panel.
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When locating, allow sufficient
space for projections shown on drawing.
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To wind clock, rotate winding knob
in a clockwise direction until a stop is reached.
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To set clock, pull winding knob out
and rotate as required to set time of day hands. Knob will return
to winding position when released.
Lighting
Wiring
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Pin 1- Common Ground
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Pin 3- NVG Green Lighting
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