This is a Mercury control panel illustration as scanned from an original Spacecraft Flight Operations
Manual for Spacecraft 18 (Scott Carpenter’s Aurora 7). It is left as originally scanned except for some rearrangement of parts to fit on a plotted sheet. The scan is enlarged to
approximately full size. (The scale is not exact because the original is only an illustration, not an engineering drawing.) It gives a very good sense of the true panel size.