RPF PREMIUM MEMBER
Everything from Wah's original drawing through the hero props up to TWC's schematics are somewhere in the 100°-115° range. I feel like anything in that window will look "good enough", for much the same reason a communicator can look right with the antenna grid anywhere from 90° to a 200° reflex angle from a broken stop. I personally think it looks best in a 135°-160° window for that, but anything in that previous range is backed up by the show. Same with seeing one or another tricorder that's apparently been twisted past its stops, but even then I don't remember seeing anything past 135°.