High accuracy - Battery-eater

The accuracy has impressed me. Highly reproducible and weigh several pieces actually corresponded to the sum. Did they primarily as Teewaage and widely used in the kitchen.
BUT suffering she eats when switched off still strong batteries. But you can use batteries at least.
Unfortunately, she has but after 2 years abandoned the service. After initialization, only comes "-------"
That's why only 2 *