Three-line timer allows the user to start 3 different timings concurrently or to individually count down from 99 hours, 59 minutes, 59 seconds to 1 second. When the timer reaches zero, it sounds an alarm, displays a “Time’s up” notice, and begins counting up. The unit’s memory will return the digits to the previously programmed time, making it ideal for a group of repetitive tests. The timer can also be used as 3 stopwatches or for any combination of up/down timing. An ISO 17025 individually serial-numbered Traceable^® certificate is supplied to indicate instrument traceability to standards provided by NIST. The unit also includes chemical-resistant ABS plastic casing, magnetic back with easel stand ideal for mounting on equipment, and a silver-oxide battery that is good for 2-year use. Dimensions: 3-1/4" x 2-3/4" x 1/2". Weight: 3 oz.