Most people don't need a '300 kg platform scale' — they need to weigh flour sacks, gold, groceries or truck loads. Start from your job, and the right scale becomes obvious.
For a shop counter
A 30 kg price-computing counter scale with 5 g accuracy handles billing and everyday goods. Add a small platform if you also weigh sacks.
For gold & jewellery
Choose 0.01 g for retail or 0.001 g for assaying, with tola/gram/carat modes and internal calibration.
For home & kitchen
A 1 g digital kitchen scale for cooking; a digital body scale for weight tracking.
For farms & mandis
150–500 kg platform scales for grain and flour; hanging scales for bales; weighbridges for trucks.
For factories
Industrial platform/floor scales in custom sizes, plus weighbridges for inbound/outbound loads.