Stopwatches
Stopwatches
Handheld or tabletop timepieces to measure elapsed time between activation and deactivation points; analog or digital; may be shockproof, waterproof, and/or traceable; may have multiple functions; may include a neck cord or other attachment device.
A laboratory stopwatch measures time intervals using specific activation and deactivation points.
Analog or mechanical stopwatches are typically controlled by two buttons. The first button starts the timer and the second stops the measurement, and the elapsed time is displayed. The time can be re-started by pressing the first button again, and the time is reset to zero by pressing the second button again. The second button may also allow for lap times or split times.
Mechanical stopwatches are spring-powered and have to be wound periodically. Digital stopwatches and timers are usually powered by a silver cell or lithium battery.
Digital electronic stopwatches or timers have crystal oscillator timing elements that make them much more accurate than mechanical versions. They may also display the date and time. Some stopwatches count by centiseconds (1/100 of a second), which is not to be confused with milliseconds.
Digital timers are now available with a number of useful features. Some have more than one timing channel and can be used to simultaneously measure the time for more than a single activity.
All stopwatches and timers can be calibrated and certified based on standards traceable to the National Institute of Standards and Testing (NIST). Certified timepieces can then be used to calibrate other devices for everyday use.
Large digital stopwatches found in sports stadiums and that can be seen from a distance are called stopclocks. Stopwatch functions may also be available on wristwatches, cell phones, computers, and other electronic devices.
Fisherbrand™ Timer per conto alla rovescia a 3 canali
È in grado di svolgere contemporaneamente le funzioni di tre timer separati. Il timer per conto alla rovescia Fisherbrand™ a 3 canali è in grado di effettuare un conteggio decrementale a partire da un massimo di 99 ore, 59 minuti e 59 secondi per ciascun orologio. Con allarme acustico e visivo.
Fisherbrand™ Cronometri impermeabili/antiurto Traceable™
Scelta tra modello impermeabile/antiurto o resistente all'acqua/agli urti. I cronometri impermeabili/antiurto Traceable Fisher Scientific visualizzano l'ora al secondo, in formato AM/PM, la data e il giorno della settimana, e sono ideali per l'utilizzo in laboratorio o in stabilimenti di produzione.
Fisherbrand™ Cronometri da 24 ore Traceable™
Per applicazioni generiche. Cronometri Fisherbrand Traceable da 24 ore per misurazioni singole, time-out, misurazione continua e tempo parziale cumulativo.
Traceable™ Big-Digit Stopwatch with Calibration
The jumbo digits and high accuracy of the Traceable Big-Digit Stopwatch with Calibration make it the perfect stopwatch for the lab or field. Display time of day, date and day of week. The ABS plastic case is water-, dust- and shock-resistant, with a handy clip and hoop and loop fasteners allows you to mount the stopwatch to various surfaces.
Brannan™ Water Resistant Stopwatch
1/100 second water resistant stopwatch to IP65.
Fisherbrand™ Cronometri Traceable™ da 10 ore
Per applicazioni di carattere generale
Fisherbrand™ Cronometro impermeabile e antiurto
La rintracciabilità NIST garantisce qualità e precisione. Il cronometro impermeabile e antiurto Fisher Scientific è un cronometro digitale LCD al quarzo per uso generico con custodia in plastica ABS sigillata con O-ring, ideale per impieghi pesanti.
Fisherbrand™ Cronometro a cifre giganti Traceable™
Le cifre più grandi (alte 1/2 in.) consentono una facile lettura.
Fisherbrand™ 300 Memory Water-Resistant Stopwatch
Memory storage for 300 lap times. Water-Resistant Stopwatch has an O-ring-sealed and shock-resistant ABS plastic case with nonslip rubber sides.
Fisherbrand™ Cronometri Traceable™ Kaleidoscope
Cronometri digitali in sei colori trasparenti; con codifica a colori per l'abbinamento a test o strumenti specifici. Il cronometro Fisher Scientific Traceable Kaleidoscope visualizza il tempo in ore, minuti e secondi, in formato 12 ore, la data e il giorno della settimana.
H-B Instrument™ DURAC™ Digital Stopwatches
Supplied with multi-language (English, French, German, Italian, Portuguese and Spanish) instructions, these electronic stopwatches include a calendar and a clock.
TFA Dostmann Mechanical Stopwatch
This mechanical stopwatch made of metal is particularly sturdy and always ready for use. The stopwatch is wound up by hand and then runs for up to 30 minutes. After the stop, you can read the time to 1/5 second. Carry bag and neck strap are included.
TFA Dostmann Digital Stopwatch
This small and compact digital stopwatch is the ideal companion for leisure and work. It reliably measures the time to 1/100 second accuracy and can show split times. The stopwatch has useful additional functions, such as an hourly chime or an alarm with snooze function.
Brannan™ Cronometro con certificato
Conteggio fino a 1/100 di secondo. Il cronometro Budget Brannan™ è dotato di contagiri, calendario, ora e allarme. Batteria e cordino per collo inclusi.
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