What should you use to check whether your floorplan is to scale?

To accurately determine if your floorplan is to scale, measuring the doors is an effective method because doors are standard sizes and provide a physical reference point within the context of the overall room layout. By comparing the measurements of the doors in your diagram with their actual dimensions in the venue, you can assess whether the proportions in your floorplan accurately reflect reality. This method ensures that all other elements in the floorplan—such as furniture, pathways, and overall space utilization—are proportionate and also to scale.

Other choices may have their uses in understanding the venue but are less reliable as a direct method for checking scale. A scale ruler is useful for creating and verifying dimensions but does not help if the existing plan hasn't been drawn to scale. A photograph of the venue can provide perspective but lacks the exact measurements needed for verification. Similarly, a plan view of the location serves as a guide but does not directly confirm scale accuracy without measuring actual elements present in the venue. Thus, relying on the measurements of doors is the most concrete method to check the accuracy of your floorplan's scale.