270º sweep engine instruments

[B2431]

I am having a devil of a time locating 2.5" electric engine instruments with a
270º sweep. Anyone know a reliable source?

Dan, U.S. Air Force, retired

[Ed Wischmeyer]

> I am having a devil of a time locating 2.5" electric engine instruments with a
> 270º sweep. Anyone know a reliable source?

Van's Aircraft has a full line of 2.25 inch gauges, and that is the
standard aircraft size.

It's not at all clear to me that 270 degree sweep gauges are the best
from a human factors point of view, however. Sure, if you need to read
things to an umpteenth of a per cent, the extra arc is nice, but that's
what digital is good at. My guess is that 90 - 135 degrees of swept arc
are easier to read quickly.

Ed Wischmeyer

[B2431]

>From: Ed Wischmeyer
>
>> I am having a devil of a time locating 2.5" electric engine instruments
>with a
>> 270º sweep. Anyone know a reliable source?
>
>Van's Aircraft has a full line of 2.25 inch gauges, and that is the
>standard aircraft size.
>
<snip>
>
>Ed Wischmeyer
>
Egad, I knew that. That did it, I'm going to fire my proof reader.

Thanks, Ed.

Dan, U. S. Air Force, retired