Re: Digital vs. Analog engine gauges
The analog tape gauges (or vertical rectangles described above) were used in high performace aircraft in the 50's and 60's when jets started to come on the scene. The aligned gauges reduced pilot workload considerably since they did not have to think about what each gauge was telling them. They could identify the problem reading and evaluate quickly.
Sailing or motoring along at 6 kts is not quite the same as dogfighting at hudreds of miles per hour, but it is nice to be able to take a glance at your engine instruments and know if everything is OK.