Floor Plan Scale Help

Hi, would really appreciate some help.

Following a measured survey site visit of a property, in SketchUp for Web I drew the existing and proposed floor plans (Attached) to accompany a planning permission submission for the property based on the internal measurements taken.

I did not expect the planning officer to go into the detail of measuring the floor plan so I just included a 1:100 and 1:50 scale I found on a similar app. However the officer has now pushed back as they are using a piece of software called Objective Trapeze to show that the scales I added to the plans are not correct. Given the actual measurements used in Sketch Up are correct, how would I figure out the correct scale to accompany the drawings? Thanks,

This is the sort of thing that is very simple to do with LayOut. Besides you should not be using SketchUp Free for commercial use as that is a violation of the EULA.