eastsideTim
eastsideTim UltimaDork
8/22/23 1:10 p.m.

Maybe my google-fu is not good enough, but I have not been able to find what I am looking for.  I am looking for a handheld stopwatch that can handle 100ths of a second (heck I'd even take 10ths if need be) up until one hour.  Most do not indicate when they go to displaying seconds instead of hundredths of a second, but the ones that do mostly seem to be at some point when the minutes hit two digits.   I was able to pick one up that goes past 10 minutes, but still loses precision somewhere later.

Anyone know of one?  Oh yeah, can't use a smartphone app (would not meet sanctioning body rules), has to be a "dumb" stopwatch.

93gsxturbo
93gsxturbo UltraDork
8/22/23 1:16 p.m.
Slippery
Slippery PowerDork
8/22/23 1:18 p.m.

Do these work?

Casio

eastsideTim
eastsideTim UltimaDork
8/22/23 1:24 p.m.

Thank you, I love this forum!  I dug up a pdf manual for the Casio, and I think it will do what I want.  Still trying to check the cheaper options, but willing to drop the money on the more expensive one if need be.

M2Pilot
M2Pilot Dork
8/22/23 2:33 p.m.

Stopwatch app on my phone measures to 0.01

TurnerX19
TurnerX19 UberDork
8/22/23 11:25 p.m.

In reply to M2Pilot :

Not legal for OP's aplication.

Woody (Forum Supportum)
Woody (Forum Supportum) MegaDork
8/23/23 8:34 a.m.

In reply to eastsideTim :

Are you trying to achieve this with a mechanical stopwatch?

Precision depends upon frequency. Higher frequency -> higher beat rate -> higher precision -> lower power reserve.  In general, there are exceptions. 
 

This is not a real definitive article, but this turned up after a quick Google and helps explain some stuff. 
 

https://montredo.com/the-fastest-watches-in-the-world-movements-with-oscillating-frequencies-far-beyond-4-hz/#:~:text=50%20Hz%3A%20TAG%20Heuer%20Carrera%20Mikrograph%20100&text=The%20handsome%20chronograph%20is%20equipped,1%2F100%20of%20a%20second.

eastsideTim
eastsideTim UltimaDork
8/23/23 9:52 a.m.

In reply to Woody (Forum Supportum) :

In order to place in the event we're competing in, we'll need to travel 90 miles, and be less than 1 second off from an exact time (54 minutes).  So, even just tenths at that point will be fine, because there is obviously a limit to human reflexes, but if we are running on seconds alone on a timer, it'll be more difficult to gauge how close to perfect we are.

Edit: Electric stopwatch is the plan.

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