Yes metric electronic kitchen scales are sold in the United States. Most have to be ordered online or if you go to a store they could special order it for you.
There are many places where one can find reviews of top electronic kitchen scales and appliances. One can search on the websites Amazon where customers can leave reviews of the product.
Visit the Restaurant Depot's website to find what you need. They are a full service restaurant store.
There are scales such as the The Escali Cibo Digital Nutritional Scale that are useful for diabetics. These scales tell the user the carbohydrate contents of foods. Some scales come with a book with an index of how much carbs, fats, and proteins are in a food.
Calibrating scales. Creating precise mixtures.
My mother's kitchen scales have lasted well over 70 years.
Butch chart Scales and Electronic Scales.
The best digital food scales currently on the market include Terrailion Electronic Scales, Kitchencraft Cast-Iron Scales and Bugatti Uma Weighing Scales and Timer. The scales were rated on price, style, read outs, including LCD displays, accuracy, and durability.
While there are many very accurate kitchen scales on the market, the Oxo Good Grips Food Scale is one of the most accurate and most useful kitchen scales around.
Most electronic scales, no matter who the manufacturer is, are accurate to within a few grams. In American terms, since an ounce is 28 grams, this means pretty much any electronic scale you buy will be accurate to within one-eighth of an ounce. For normal household use, this is accurate enough for all cooking.
With electronic scales
Ozeri kitchen scales are excellent, precise, and have scales that are oversized for larger foods, and at a low price of around $20 USD. Another scale to consider is Polder scales; these are high quality scales that are usually spot on precise.