4 inches is the standard spacing for the compact centerset faucets a single piece faucet needing either three holes for the hot and cold water valves and the drain popup or two holes with no popup.
Distance between faucet and soap dispenser.
My dispenser drips exactly down the inside edge of the sink.
It s closer to the cold water faucet which is normally used most when washing hands well i don t tend to use the hot water faucet to wash my hands.
Take note of the distance between touchless soap dispenser and faucets in avoid of accidents related distance between the center of round hole and sinks that could confirm the residual of soap dispenser to the bathroom sink.
Choose the proper position on the table drill about 25mm diameter round hole then put the faucet into it and screw down with the screw.
I have a 15 prep sink and the items faucet soap dispenser sprayer air switch are 4 apart it s super close see pic but that s only because there s hardly any room due to the small sink dimensions.
Since everyone in our household is right handed the soap soap dispenser is normally put to the right but in one of our bathrooms we place it in between the two faucets.
When more than one hole is required you ll find the required hole spacing in the product specifications or you can measure the distance between faucet s tailpieces yourself.
It s ok to think outside the box and not space your accessories evenly as in this design.
4 6 or 8 inches are the standard spacings for mini widespread bathroom faucets which consist of three separate pieces all are three hole configurations allowing for the valves and the spout.
The dish soap dispenser is 4 inches to the left i think they said and the air switch for the gd is 4 in to the right.
For my other 30 sink i have a faucet soap dispenser air switch and i put them much much further apart.
As the other poster mentioned be sure it s close enough to the edge.
They are all about 2 away from each other i think see picture.
Ours faucet is centered on the sink since it s in the middle of the island it has a built in sprayer so we didn t need another hole for one.