I found this on YOUTUBE and think it is worth sharing.
An accurate balance is a crucial piece of equipment needed for serious analytical work. When preparing reagents such as calibration standards or colour development reagents a good quality balance with a resolution of 0.0001 grams is essential. Good quality analytical balances are rather expensive and can range from $ 1500 - $ 2500. Personally I won’t be tinkering with this concept as I already have an analytical balance. I still think it will be great if a cheap alternative can be developed.