Reviving this thread, which was very helpful in my search for a swingweight machine. It appears the NL shop referenced above is out of business. I also looked at importing one via freight forwarders but the Alibaba vendor is out of stock and the shipping cost would have added a few hundred dollars. I ended getting the Dunlop machine from within the US. For smaller incremental cost over the various importing options, I get a 2 year warranty from Dunlop.
I got the machine and was pleasantly surprised that it is made in Taiwan. It is very well made and well package. It was easy to set-up and I have taken over 30 measurements. The machine has helped me dial in my array of Pure Strikes gen2 racquets. Prior, these were all adjusted to have matching static weight and balance, but I could feel that some of them felt different. With the machine, I learned that my stash of PS racquets had SW range of 327 to 334 - these all had the exact same static weight and balance point. I can definitely feel the difference between a frame at 327 and one at 334.
Anyway, via lots of experiments and measuring, and i was able to dial the frames to range of 329 to 332 static weight, 6pt HL and 329 to 330 SW. Closing my eyes and having someone hand me frames, i could not tell the difference. So that is good enough for me.
I also used the Dunlop SW machine to help a guy on my club team identify why he like his 2018 PD so much more than his 2021 PD even though both were within 2 grams of each other. The 2021 feels heavier to him when he plays with it. Turns out with wear and tear along the top of the 2018 racquet, the SW was 307 and the 2021 one was 322. He is going to try to remove some of the bumper guard and thinner gauge strings on the 2021 PD to get its SW down.
Net, I am very happy i got the Dunlop machine. It is not cheap but to me, will be a tool that I will use often - definitely have used it more than all the power tools in my garage

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Hope this post helps others who are deciding to make the investment or not.