horizontal centring in a sentence

1. The interior features a new upper dashboard design with a new horizontal centre instrument cluster.
2. The windows are filled with 4 coloured lead lights, 3 of which pivot along the horizontal centre line.
3. Many accessories for electrical installations ( e . g ., wall sockets, switches ) sold in the UK are designed to fit into the M3.5 screws ( typ . 25 mm or 40 mm long ) located on a horizontal centre line, 60.3 mm apart.
4. It's difficult to find horizontal centring in a sentence.