Previous scales I've had have been unusable due to lack of consistency. I have these scales checked for consistency (showing the same weight for the same item weighed multiple times under the same conditions) and accuracy (although scales can be consistent - show the same number for the same item - the number itself can be wrong). .Summary: Consistency is within 2/10 pounds (I was hoping to be within 1 pound, so that beats my expectations) and based on my dumbbell weight, that's for sure. Details (I left the scale in the exact same position on a hard, flat/even floor with no bumps, inclines or declines): 1:1 consistency test. I pressed the scale to turn it on, stood up and weighed myself in: 198.42. Tears from the scales, did not let the scales go out by themselves, got up again and weighed: 198.43. Stepped off the scale, let the scale turn itself off, tapped it to turn it on, got up and weighed: 198.4 accuracy and second consistency check (this is not 100% accuracy as these are old metal dumbbells and never tested them how accurate their weights are - the dumbbell manufacturer may have a reasonable margin of error of a few tenths of a pound and/or the weights may have chipped here and there)1. Put 2 25 lb dumbbells on the scale and they weigh 49.6 (Problem: Difficult to mimic the same condition as the person standing on the scale)2. Allow the scale to turn itself off, touch to turn it on, step on the scale with a 30 lb dumbbell: 228.0 (4/10 lb difference based on Consistency Test 1)3. Let the scale turn itself off, touch it to turn it on, step on the scale with a 20lb dumbbell: 218.2 (2/10lb difference based on Consistency Test 1) Ultimate Consistency Test (compare with the first one): * Using weights helped test accuracy AND they helped simulate someone else stepping on the scale so I could then do another final consistency check on just my weight and compare to the first consistency test : 1. Allow the scale to turn off by itself, tap turned on without stepping on the scale with dumbbells: 198.2 (2/10 lb difference based on consistency test 1)2. Allow scale to turn off by itself, touch to turn on, step on scale again without dumbbells: 198.2 (2/10 lb difference based on Consistency Test 1) * 2/10 lb difference between the first test and this test exceeds my expectations.Notes:1. I wore the same clothes (including glasses) and did not eat, drink, use the toilet, etc. between cradles. 2. Always tap the weight with your foot first to turn it on; Don't step on the scale when it's off (it didn't calculate my weight unless I touched it to turn it on)3. The scale switches itself off approx. 15 seconds after the last weighing4. As you step on the scale, you will see the digital weight reading fluctuate until the scale finds the correct weight, and then the last digit will flash to indicate the calculation is complete.
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