Bathtub Taps and Faucets have evolved significantly in recent years.
From the two-handle faucets, one for cold and one for hot water in the past, today its normal to use the One-hand-mixer that is much easier to use.
There are a big different between thermostatic or mechanical mixers. Faucets with thermostat, regulate the water temperature through a simple system and in contrast to the conventional faucets, these are water-saving because the temperature does not have to be reset every time.
Faucets with two separate handles are still available today for the realization of a classic bathroom or for restoration of antique bathrooms.