Technasonic Check-Go Pro Sweet Spot Electronic Golf Ball Liner

This is a great product and I don't think it matters much where you buy it from as long as you are satisfied with the price and as long as it is new. I just wanted to clear up 2 misconceptions I've been reading among these reviews.1. A small percentage of the time, cetainly less than 10%, you will encounter a golf ball where if you spin it and mark it multiple times you may find that that specific golf ball has 3 or 4 different axis. This is simply a case in which the center of gravity (COG) is so close to the actual center of the ball that the device cannot make up its mind about any single axis. This is not a fault of the device, it's just that some golf balls are near perfect. When this happens, you can be pretty sure that you've got a golf ball that needs no orienting on the green or off the tee. It's not rocket science, it's simple physics. So any claims that this device will actually show multiple axis, this is true, but only a small percentage of the time and on near perfect golf balls.2. With regard to the pens running out of ink, I tried buying some Sharpies or a similar brand called MaxPen Ultramark. After trial and error what I can best recommend when your OEM factory pen starts to run dry after a few hundred balls is that you obtain 3 things.a) A 1 oz bottle of Black India Ink (available at WalMart for about $4.)b) A hypodermic needle (in some states you need a prescription if you can't talk your pharmacist into giving you one.)c) A pair of small needle-nose pliers, the kind that are bent 45 degrees work best.With the needle nose pliers gently extract the felt tip completely from the pen. It's about 1.25" long. Using the hypodermic needle take a small amount of the ink and inject it into the body of the pen. It's a very small opening where the felt tip was removed, so a hyponeedle works best. Just a few drops or maybe a milliliter will do. Reinsert the felt tip with the needle nose pliers. It should work as good as new. Because the felt tip is so long it should last forever or until you lose the pen. I have tried this on Sharpies and other store-bought permanent marking pens and they don't seem to have the right kind of felt tip made out of the right material. I tend to get a buzzing sound from a Sharpie when the felt tip comes in contact with the spinning ball and a line on the ball that is blurry. The factory supplied pen is engineered properly and is quite conducive to painting a nice smooth line on a spinning golf ball. You can spend $15 or $16 to buy five replacement pens from the manufacturer if you want to. This is just a cheaper alternative.All-in-all this is a great product. Personally I take Ralph Maltby's advice and check all of my golf balls with Epsom Salts first to weed out the balls which are badly out of balance. I am guessing that 3 balls in 10 are badly out of balance. See Ralph Maltby's video on You Tube to understand this process. Those balls end up in my shag bag. The balls that pass the Epsom Salts test then get cleaned thoroughly to remove all of the salt and then after drying I spin them and mark them one at a time using this product. Great product!

It should be 0 stars—-Doesn’t work at all—do not buy!!! After the ball is spinning and you touch it with the marker it wobbles all over the place and the there are black lines all over the ball—stupid machine and a total rip off!!

This is the coolest thing! Even top-brand golf balls are NOT balanced out-of-the-box, such that the line is the actual line of rotation, ie, the equator. This device reliably and consistently finds that equator, as well as the lightest (and conversely, the heaviest) point, ie poles, on the ball, at a right angle to the equator. How do I know it works? You can take a previously-marked ball and it will find that same equator and poles! In theory, if a ball were perfectly balanced, any orientation would also work, but I have yet to find one.Does it actually help? I guess that would depend on you and your swing. But I can’t think of any circumstance where it would actually hurt. So if it helped, even slightly, on your drives and shaved even one putt off of your game, isn’t that worth $28?I’ve been buying these for golf friends, my golf instructor, and, of course, for me. One of them says than Zen balls are factory-balanced, such that the logo line is the true equator. But I don’t use Zen balls, so I use the Check-Go on the balls I like, and voila! You’ll be surprised at how much even the top-brand balls benefit from balancing.The Check-Go is less than $30 and is easy - even fun - to use. But maybe I shouldn’t be telling everybody about it, and keep it as my “secret” weapon...

First, the flaws:1) the top guard will not allow a normal pen fit thru the hole to the ball. The pen is black. I want other colors.2) Two 1.5 v batteries do not provide enough power. When you spin it up til the green spin light is solid, the ball spins fast, but when you press the pen even lightly against the ball, the motor slows way down. My ball have dimples, and a bit of pressure is needed to get the line wide enough to seeNow, my resolutions:1) Remove the top guard.2) Use any pen I like, even multiples3) The best pen is a Sharpie Chisel Tip. Mine is blue.I ordered the spinner after my co-competitor was playing the same ball as me, and he had one black mark on one side of the ball. Once, I hit his ball by mistake. Another time, he hit mine, which had 2 red dots and a smilie face below the label on each side.The patterns I make with my technique yield are different from each other, no two the same, JUST LIKE MY SWING! I don't even have to tell them what my mark is. They can identify uniquely to me just by watching me hit.

Was excited to try this product but after using it with a dozen brand new ProV1’s I just ended up with golf balls with a bunch of dots on them. Seems like the “sweet spot” was different every time. It does work well to draw straight lines on your golf balls but a cheap $5 plastic device would also do the trick. Either this product is super gimmicky or I need to reach out to Titleist about their quality.