[METRIC]
A-A-1457A
April 24, 1992
SUPERSEDING
A-A-1457
April 28, 1980
COMMERCIAL ITEM DESCRIPTION
TIMER, INTERVAL, MECHANICAL
( 120 Minute maximum interval )
The General Services Administration has authorized the use of this commercial item description in preference to Federal Specification GG-T-416.
Salient characteristics.
General. The timer shall have all the following components: case, base, dial (face), regulator, bell alarm, suspension device, clock mechanism, starting device, crystal (face cover) and hands.
Materials. The materials used shall be of sufficient strength and durability to ensure that the timers are securely and sturdily constructed and will remain usable over the normal life of the timer. Any metals used shall be corrosion resistant or treated to resist corrosion of any type, consistent with their normal functioning. The crystal material shall be clear, non-yellowing, non-breakable and not easily scratched.
Dimensions. The overall dimensions shall not exceed 18 centimeters in height, 15.25 centimeters in width and 13 centimeters in depth.
Mounting. The base shall be stable with no rocking or wobbling when placed on a flat level surface. The base shall have at least two mounting holes.
Marking. The timer shall have two scales: The outer scale shall be marked for every 15 seconds and numbered for every minute. The inner scale shall be marked and numbered for every ten minute interval.
Timers shall have non-luminous markings and hands that shall be readable from a distance of 92 percent in normal office light.
Hands. There shall be two hands, one the approximate length for each scale. They shall be easily set for any desired interval to a maximum of at least 119 minutes, and shall indicate the time remaining in an interval.
Starting device. The starting device shall be conveniently located on the outside of the timer case.
It shall activate the timer when placed in the “start” position and automatically return to its original position by the end of an interval.
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
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