On May 25, 8:58 pm, benpost wrote:
my wall units are in place with a splashback and chimney extractor.
i'm here to ask the best way of lining up the base units with the wall
units. the problem is that the worktop and upstand are already in
place so i cant just draw a straight line down from the wall
cabinets. what would be the best way of finding the correct position
of the base units, such as the oven housing which is meant to go
straight below the hob and extractor?

2 person job:

Hold a framing square against the wall units in line with an edge.
Hang a plumb bob down in line with the front of the worktop.

A