The scale determines the weight of one item by means of the total weight of a reference quantity. This reference weight is to be stored in the scale’s memory. Then the number of a random quantity of the same articles can be calculated, f.i. like screws, parts, etc. The number will be indicated in the display.
The larger the reference number, the more accurate the result of counting will be. After all, the article’s weights can differ some fraction. With a relatively small reference number a minimal weight difference might lead to a less accurate counting. So it is recommanded to place a number of articles on the scale as large as possible to determine the reference weight.
A counting scale does not compute prices and the counting function is not intended for legal trade purposes. Sometimes (in Dutch language) a counting scale is confused with a price computing scale, but they have different functions.
A counting scale has three display windows (indicating number, piece weight and en total weight) and a random reference number can be inserted by means of the numeric keys.
Regular scale with counting function
A regular scale with simple counting function has one (often larger) display window, in which the number of articles or the total weight is indicated, depending from the selected mode. With these kind of scales it is possible to determine the reference weight only by selection out of fixed preset values, for example 10, 20, 50 or 100 pieces, because of a lack of numeric keys.
With both versions, after determination of the reference weight, the number of articles can be calculated, provided that the scale’s capacity is not exceeded. The procedure can be unlimitedly repeated, for the reference weight stays in the memory until it is deleted.