Turntable speed accuracy

I am not assuming that the main requests are all there, - in fact I see that in many cases this is just not the case.
The request itself is nevertheless a conditio sine qua non in the context of the technical blue book of ANY turntable.
That reality in many instance doesn't follow the request doesn't mean the request is wrong.
Mediocrity may be the name of the game with few exceptions.
It never was for me.
To me it is always and only about best possible results - not was a majority may have problems in nor whether a majority of components may have problems with.
IMHO speed accuracy is so basic a request by nature for a turntable that it is not worth discussing at all.

Speed accuracy has inspired two more companies bringing out devices for checking. Allnic with the SpeedNic turntable speed checker and Dr. Feickert's free Platter Speed speed check software (for i Phone or Android) - learning from MF...

best @ fun only

Dear Thuchan, the Speednic by Allnic looks neat. Especially as it allows adjustment during play and thus taking into consideration stylus drag.
Thank you for the hint.
Cheers,
D.

From what I can see and read about the Speednic......it seems no different to a Kab strobe?
Can anyone explain to me how the Speednic competes in any way with the Timeline?

I downloaded the iPhone app and did some testing. The same test record that I used before also has a track with 3150Hz. As I mentioned before, I measured considerable runout in my test record which by itself causes some audible Wow when playing constant frequency test tones. The center hole of this test record has a slight amount of play on my tt spindle. After much patient work to minimize the record runout I got the following measurements: Mean Freq: 3151.3, Raw Frequency: -0.22%/+0.24% relative, -7.0Hz/+7.4Hz absolute. Lowpass Filtered Frequency: -0.02%/+0.01% relative, -0.5Hz/+0.5Hz absolute. I'm guessing that the filtered values subtract out the record runout. The reason I conclude that is as I meticulously adjusted the record on the platter to minimize runout, I had raw numbers as high as -9.8/+10.7Hz while the filtered values never exceeded 0.03%.
Another observation: The original Mean Freq was 3155.6Hz based on my setting using the strobe disc. I adjusted speed down and can certainly work some more to dial it in at precisely 3150Hz. The other observation is that holding the iPhone while taking the measurement adds more error. It is sensitive enough to pick up hand movements. I set the phone on a table about 1 meter away from the front of one speaker.
So how does my humble BD table compare to some others?
btw- I have a record clamp. So I adjusted the record relative to the spindle and then clamped the record down.