Bench scales are scales which only display the weight, unlike the retail scales where price is shown in addition, or counting scales where the ammoun of equal details is shown. Bench scales are usually III class, because with a higher precision they would be considered a laboratory scale. When selecting a bench scale, it is important to pay attention to the following parameters - max weight (In bench scales it usually is not greater than 30kg) and the percision of the scale. The larger the max weight, the larger the indication value. For III class scales, it usually is in the following proportions - 3 kg/1g, 6kg/2g, 15kg/5g, 30kg/10g. A guaranteed percision starts from 20 values, which means that for example a 3kg scales withh have a guaranteed percision of 20g. Additionally, it is important to select the right size of the weighing platform, so that when a large product is placed on the scales, it doesn't block the display and doesn't interfere with the measurements. The weight is usually displayed only one once screen, but there are also models availabe with two screens, like CAS SW bench scale. Power can be supplied soley from the electrical grid or from a built in battery which allows for more autonomous work. It is important to choose the right protection against the enviorment too. If the enviorment isn't wet or dusty, an IP 54 grade scales can be used, but if the scales will be placed in a wet and dusty enviorment, like a manufacturing facility, it is best to choose a scale with an IP 67 class. Depending on what the scale will be used for, it should be known beforehand if the scales will require calibraton of a verification certificate. The scales can only be verified if initially they have been confirmed to be as verifiable under EU regulations by the manufacturer. If there will be a need to attach the scales to a computer - find out if the scales posess an RS output. "BK Systems" (svaruveikals.lv) offers CAS (South Korea), KERN (Germany) and AXIS (Poland) brands of bench scales.