NTEP - NTEP stands for "National Type Evaluation Program", and when a scale or measuring instrument is labeled as 'NTEP certified,' it means that it's approved for commercial use where the weight or measurement is used to determine the price of an item or service.

'Legal-for-trade' as per NTEP standards means that the scale or measuring device can be legally used in transactions where the measurement is crucial for determining prices. For example, when you're buying meat from a butcher, the scale they use to weigh the meat must be NTEP certified because the weight determines how much you have to pay. Similarly, it applies to other industries where selling, purchasing, or services are based on measurements. This ensures that the customer is getting exactly what they're paying for and that the scales used are accurate and reliable.