Postal scales are designed for weighing letters with the possibility of performing a cumulative tare over the entire weighing range. Stability time is approximately 2 seconds. The indicator is supplied with a backlit LCD display attached to the structure. In addition, an additional display can be requested for the customer. Non-approved versions may have additional functions: for example the peak weight function in Newtons. The scales are powered by the mains or internal rechargeable batteries, an RS 232 output can be mounted as an option.