Q. What is the precision of jewellery weighing machines?

Answer

Its accuracy is defined as being within 0.20 pounds in 200 pounds, or 0.1%, if the average reading of the scale for a 200-pound reference weight is 200.20 pounds. The precision of a scale refers to how consistently its indicated weight remains the same across many measurements of the same thing. The accuracy of a scale is determined by how consistently its indicated weight remains the same across several measurements of the same thing. The average exhibited weight of a 200-pound object would be 200.20 lb if its shown weights were 200.20, 200.30, 200.15, 200.10, and 200.25 lb, but the measured values could differ by as much as 0.10 lb from this average.