/diy/ - Do It Yourself

>>1777334
It depends on the accuracy of the scale twice over the plate and the parmesan, unless the weight of the plate is known to be 1500g as part of this question. Regardless of what the scale is displaying you have two unknown quantities. The final weight is 1505g displayed, which is known to whatever accuracy the scale can read, say .5g. You find the weight of the cheese by subtracting the weight of the plate, which assuming you meaure at 1500g with the same scale, you also know to .5. Regardless of whether or not the scale is tared, you do not have more information. Taring the scale simply performs that subraction ahead of time.

If your plate weighs 1499.5 exactly, and you have 6 grams of parmesan exactly, the weight on the scale will be 1505.5, within the scale error of the displayed value of 1505, and you are a gram of parmesan over, twice the accuracy of the scale.