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  • Timers designed for the measurement and easy reading of time intervals during procedures performed in a darkroom (e.g., processing of x-ray sheets). These timers consist of time-measuring instruments that may use mechanical, electromechanical, or electronic technologies (e.g., quartz oscillator); they usually include a luminous dial that glows in total darkness or a luminous electronic display and time-adjustable audible buzzers. Some timers may also provide signal outputs to operate safelights. Darkroom timers are available in tabletop and wall-mounted configurations.
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