Air compressors with analogue pressure gauge

Analogue

— a classic analog manometer uses a round dial (sometimes dual, with two units of measurement) with a needle indicating the current pressure value. The accuracy of such a device is noticeably lower than that of a digital one (plus the needle can vibrate during inflation, making it difficult to read), however, analog manometers are significantly cheaper. Because of this, and also because in practice high accuracy is often not particularly critical, this option is the most popular and is found in all types of pumps/compressors.