Turntable Speed


Hello Forum, I'm getting back into record listening after a long hiatus. Please forgive the naive question, but here it is.  My former 1981 turntable had a speed control with the little window where you could fine-tune the speed if it was a little off. I've noticed current turntables don't have that. Reasons?
Thank you. 
tgyeti
Only product I know that's VERY accurate is the Timeline device. Don't know if it's still made.
https://youtu.be/RF2XieUlzvk
Timeline itself is accurate. The problem with it is that it relies on a human being to assess its accuracy by following a laser dot on a wall. Probably the timeline is better than the observers of the timeline.
I have a mint condition Yamaha P-550 turntable that I bought new in 1983 that also has the strobe light adjustment.  I had it completely serviced to set up a turntable system for my youngest son a couple of years ago, and it dials in the speed like butter now.  Very nice, low maintenance, budget turntable.
The SOTA Eclipse package with Condor and Roadrunner is a very worthwhile upgrade for a belt drive turntable that you are invested in that doesn’t have automatic speed correction. I did the upgrade on my VPI Classic 4 myself. Combined with an Origin Live belt it totally transformed the sound. W/F is .06 as measured with Analog Magic and speed consistency as shown by the Roadrunner usually shows 33.333 + .001 or .002.