Teacher Created Resources 10 Minute Sand Timers-Small (20682), Purple

They all work as even if sand levels look different between each one, they time out within +/- a second of each other.

While there are other ways to time a soft boiled egg or a perfect burger, none of them are as simple to use or as repeatable as the time tested sand timer

Although this is not an accurate timer, I’m deciding to give this a 5 star review because it is a good deal. With this timer, you have paid for a 5 minute timer but the manufacturer was nice enough to add 10 seconds. It is a 5 minute and 10 second timer. See the attached photos for when I timed the timer. I also had each timer compete against each other in a race. There was one that may have been a 5 minute and 15 second timer and that one finished last. I performed these tests on a completely level surface (see the picture of the level in the background) so there was no gradient error. I also controlled for different pressure systems by performing this test in my living room. there could not have been wind. Some may point out the the electronic timer I timed the timers on may not keep accurate time. The manufacturer of the electronic timer is Apple. They are a good company but there is no way to know which timer is accurate. I would recommend taking advantage of this deal.

Had to time each one and put the amount on the end. Good enough for what i was using them for tho.

These are decent and they get the job done. I like the different time intervals, and they are clearly marked.They are however a bit cheaply constructed (some of the end caps are slightly askew). It can also be a little difficult to see the sand falling for the lighter colors. They work fine, I just wish they were a tiny bit better quality.

All of these timers are great. I bought them to use for Dungeons and Dragons, and the 5 minute timer tends to get stuck regularly. Maybe I got a defective one? The other three in the set work well. (as well as the 90 second timers I also bought). The low price coupled with the amount of space they take made this an instant purchase for me since I already have enough screens in my set up to operate. The colors also make it very easy to figure out which one is which at a glance.I highly recommend them, just be wary of the longer duration timers. I suspect the sand gets stuck due to how thin the tunnel is for them, as it's visually apparent when compared between the different durations. The failure of the 5 minute timer is not a deal breaker for me as I rarely use it.I tested them against a digital stopwatch as well. There's a fair amount of variance, but for what I'm doing it gets the job done. Can't be too picky about exactness of a 1-2 dollar hourglass though.

Although very toy-like, at around $1.24 each, these are good enough for their purpose. The glass timer is inside a plastic tube, attached to plastic stand ends. I wouldn't expect them to break if they hit the floor, but stepping or sitting on it likely would. The time is printed on both ends and having them colored is nice, especially with the 3-minute timer since you can barely read the white print on the yellow end caps.Like most sand timers, don't expect total accuracy, but they all come close enough to their stated times. I tested all four multiple times, and while the speed varies with any given use, they all finished within plus or minus 10 seconds.However, I've found the 1-minute timer sometimes gets bottle-necked and stops. I haven't noticed this with the 2 or 3-minute ones though (don't really use the 5-minute). I only use these when lifting weights to time my rest in between, so it's not that critical, but something to take into account if the timer isn't in constant view. Otherwise they're still worth it for the price and function.

Just what I needed

Works great to help the kids wash their hands long enough!

Bought these for use with my daughter to help her understand the concept of time better. Like 5 more minutes of TV or other time sensitive moments.

Rien

Son útiles para medir tiempos, aunque algunos si difieren del tiempo que debería ser. Yo la uso para mis clases de Yoga y que las posturas de jn lado duren lo mismo que dle otro lado, así que para mi, me funciona... Pero si lo necesitan en tiempos exactos, mejor comprar otra calidad.

Je viens tout juste de les recevoir, donc je ne peux parler de la qualité/solidité du matériel. Cependant, il y a plusieurs secondes de différence avec le sablier 2 min., quelques secondes avec le 3 min. et 5 min. Heureusement que je travaille avec une clientèle qui ne s'en rendra pas compte! Je crois quand même être satisfaite dans l'ensemble du produit.