Review on ⏳ G&H Tea Services 3-4-5-Minute Perfect Sand Timer: Optimal Brewing Companion by Jessica Williams

The primary purpose of an hourglass is precision. I was curious how accurate the hourglass was and I measured its time several times. The accuracy of a 3 minute glass is around 2-3 seconds (ending consistently at around 2:58 or so). A 5 minute glass is accurate to about 3-5 seconds (continuously ends at about 4:56 or so). The 4 minute jar, which I would unfortunately prefer to use, consistently leaked after about 3 minutes 32 seconds. The set looks good but I paid a little more for it because I needed the exact same thing. The resulting model was not what I expected.