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Time and Weather > Clocks > Stopwatch/Clocks
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Extech STW515-NIST Stopwatch/Clock with Backlit Display and Certificate Traceable to NIST; Stopwatch Modes (Elapsed Timer, Split Time, and Two Competitor Timer); 12 or 24 Hour Clock Format; 1/100th Second Resolution for 30 Minutes; 1 Second Resolution Up to 24 Hours; Programmable Alarm and Hourly Chime Setting; ±3 Seconds/Day; UPC 793950365564 (STW515NIST STW-515-NIST STW515 NIST)
Extech STW515-NIST Stopwatch/Clock with Backlit Display and Certificate Traceable to NIST; Stopwatch Modes (Elapsed Timer, Split Time, and Two Competitor Timer); 12 or 24 Hour Clock Format; 1/100th Second Resolution for 30 Minutes; 1 Second Resolution Up to 24 Hours; Programmable Alarm and Hourly Chime Setting; ±3 Seconds/Day; UPC 793950365564 (STW515NIST STW-515-NIST STW515 NIST)
Sku: STW515NIST
Brand:Extech
$83.99
Extech STW515 Stopwatch/Clock with Backlit Display; Stopwatch Modes (Elapsed Timer, Split Time, and Two Competitor Timer); 12 or 24 Hour Clock Format; 1/100th Second Resolution for 30 Minutes; 1 Second Resolution Up to 24 Hours; Programmable Alarm and Hourly Chime Setting; ±3 Seconds/Day; 5-minute Alarm Snooze Option; UPC 793950365557 (ST-W515 STW-515 STW 515)
Extech STW515 Stopwatch/Clock with Backlit Display; Stopwatch Modes (Elapsed Timer, Split Time, and Two Competitor Timer); 12 or 24 Hour Clock Format; 1/100th Second Resolution for 30 Minutes; 1 Second Resolution Up to 24 Hours; Programmable Alarm and Hourly Chime Setting; ±3 Seconds/Day; 5-minute Alarm Snooze Option; UPC 793950365557 (ST-W515 STW-515 STW 515)
Sku: STW515
Brand:Extech
 $27.29
Extech 365510 Stopwatch/Clock, Timing capacity of 23 hours, 59 minutes and 59 seconds, Accurate to +/-3 seconds/day, Displays accumulated elapsed time and split time measurements, Accurately times a two person competition, 12/24 hour clock operation with settable hour chime; Wake and snooze alarm, UPC 793950365519 (365-510 365 510)
Extech 365510 Stopwatch/Clock, Timing capacity of 23 hours, 59 minutes and 59 seconds, Accurate to +/-3 seconds/day, Displays accumulated elapsed time and split time measurements, Accurately times a two person competition, 12/24 hour clock operation with settable hour chime; Wake and snooze alarm, UPC 793950365519 (365-510 365 510)
Sku: 365510
Brand:Extech
 $22.04
Extech 365510-NIST Water Resistant Digital Stopwatch/Clock with NIST Certificate, Sporty colorful yellow stopwatch with large LCD, Stopwatch counts up to 23 hours 59 min, 59 seconds accurate to ±3 seconds/day, Stopwatch/Chronograph mode with 1/100sec resolution (365510NIST 365510 NIST 365-510 365 510)
Extech 365510-NIST Water Resistant Digital Stopwatch/Clock with NIST Certificate, Sporty colorful yellow stopwatch with large LCD, Stopwatch counts up to 23 hours 59 min, 59 seconds accurate to ±3 seconds/day, Stopwatch/Chronograph mode with 1/100sec resolution (365510NIST 365510 NIST 365-510 365 510)
Sku: 365510NIST
Brand:Extech
 $74.54
Extech HW30 HeatWatch Humidity/Temperature Stopwatch, Programmable heat index alarm, Displays temperature, humidity, and heat index, Calendar mode displays day, date and time, Stopwatch/chronograph mode with1/100 second resolution, Fastest/Slowest/Average Lap recall, 99 lap counter with 30 lap/split memory, UPC 793950365304 (HW-30 HW 30)
Extech HW30 HeatWatch Humidity/Temperature Stopwatch, Programmable heat index alarm, Displays temperature, humidity, and heat index, Calendar mode displays day, date and time, Stopwatch/chronograph mode with1/100 second resolution, Fastest/Slowest/Average Lap recall, 99 lap counter with 30 lap/split memory, UPC 793950365304 (HW-30 HW 30)
Sku: HW30
Brand:Extech
 $48.29
Extech HW30-NISTL HeatWatch Humidity/Temperature Stopwatch with Limited NIST Certificate, Programmable heat index alarm, Displays temperature, humidity, and heat index, Calendar mode displays day, date and time, Stopwatch/chronograph mode with1/100 second resolution (HW30NISTL HW30 NISTL HW-30 HW 30)
Extech HW30-NISTL HeatWatch Humidity/Temperature Stopwatch with Limited NIST Certificate, Programmable heat index alarm, Displays temperature, humidity, and heat index, Calendar mode displays day, date and time, Stopwatch/chronograph mode with1/100 second resolution (HW30NISTL HW30 NISTL HW-30 HW 30)
Sku: HW30NISTL
Brand:Extech
 $127.04

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