NORJIN Table Saw Dial Indicator Gauge, Table Saw Gauge for Aligning and Calibrating Work Shop Machinery, 0.01in Resolution

Tl;dr: I don't recommend this gauge unless you can't find a better one, though I do recommend owning a dial indicator. It really is way better than a combination square. The rest of this review will be about what to do if you already have this, or buy a different one that has the same problems. Finally, some tips for using this and adjusting your saw.The miter slot adjustment screws are as bad as the other reviews say. On mine, they're impossible to set because the female threads have SO MUCH slop, the set screws spin almost freely. I keep getting them just right only for them to loosen themselves just from being picked up. And since the slop is in the female threads, inside the jig, I can't fix it by replacing the set screws. I could retap the female threads or use thread locker (which might make them TOO hard to adjust), but I chose the easy way out: painter's tape. It took 4 layers of 3M blue tape for the miter bar to fit snugly in the slots on my DeWalt jobsite saw (DW 7491RS, the ubiquitous 10" model). YMMV. It's ridiculous that I have to do this on a brand new precision instrument, and does not bode well for the accuracy. No way I can recommend such a product. Try to find one whose reviews praise its miter slot width adjustment reliability.Since there are no instructions (another sign the seller does not care), I looked on YouTube and found a very helpful video by 3x3Custom - Tamar ("How to Align your Table Saw Blade // Woodshop Tips") showing how to use an identical gauge. However, she doesn't show how to tilt the indicator tip to touch the widest part of the blade (hex bolt under the gauge), how to lock the dial once you adjust the needle to 0º (the silver knurled bolt on the side, NOT the one on the other end of the tip, identifiable by pushing the tip back), or how to keep the miter bar from rocking (advance the 2 black knurled bolts to touch the bottom of the slot).For my DeWalt saw, I'm including a screenshot of how to adjust the blade housing, since a lot of y'all are likely to have the same model. The diagram is somewhat confusing - the screws in question are *upside down* under the rack teeth, not sideways as it suggests. Also I'm embarrassed how often I forget that they loosen *clockwise* if you're standing and looking down at the saw. Use a 5mm hex bit on a ratchet screwdriver (my ratchet screwdriver is my favorite tool). It's SO much easier not having to reposition a stupid hex key blindly or take your eyes off the gauge. I found my blade was a whopping 0.25º too far right in the back, and that retightening the screws actually CHANGED the alignment, making it drift right again, so I had to push it further left than I actually want (about 0.1º on the gauge instead of 0º) so that the retightening brings it back to 0º. Again, YMMV.I like that the gauge itself is removable so I can use it on other things that may have runout/wobble, specifically my drill presses. The bolt that joins it to the jig (the same one that controls the tilt) is longer than necessary, making it a chore to unscrew completely, so I replaced it with a 5/8" M5 bolt, just long enough to fully thread, without any extra length. The new bolt has a Philips head, which I would argue is better than a hex bolt because I always have a Philips screwdriver in my toolbelt (and you should too, ideally a low-profile ratchet one), but not a 4mm hex key. I tighten it just enough that friction keeps the gauge tilt steady, but I can still adjust the tilt without tools.Overall, I'm giving it 3 stars because it did help me identify the runout I suspected in my blade, and it was much easier than a combination square, once I got the miter bar to stop being sloppy. The fact that I can remove the gauge and use it on other tools also adds to its value. Not sure you can find a better one for the same price, since I suspect they're all from the same Chinese factory. If not, the blue tape hack or any other suggested tricks should get you going. Or just spend more on the Woodpecker one and call it a day 🤷‍♀️

Cumple su función sin pagar tanto por otras marcas

This has adjustment screws so far off the miter slot. Far too shallow. Could not get the same measurement twice. No matter how I tried to stabilize it I could not get anywhere near what you could call precise. Do not buy!!

If there was one thing I would change on this, it would be to make the miter slide slightly narrower. Some table saw miter slots are exactly 3/4 of an inch wide, rather than being slightly larger. I had to reduce the width of the slide by about a 1/32nd of an inch in order to make this work. It already has set screws to make it wider, but having it the full 3/4 of an inch wide meant that it’s minimum width was too much.

Product was easy to use and get the table saw blade aligned with miter slop.

Works for both blade and fence alignment. Would be nice if you could adjust the T without removing the bolt. Takes a few minutes to reset for the fence alignment.

I have been attempting to make 3D cutting board designs and I was having a difficult time getting my angles to align. After purchasing this tool gauge I quickly found the deviation in my Dewalt table saw. With this tools help I was able to ensure the angle I needed was the angle I got.

Works as expected. For those having issues with getting a snug fit in the miter slot - Two options. Use thread lock to keep the set screw from losing position. Or the better option, buy set screws with a ball bearing ends. After that, its a very capable measuring device! Highly recommend.

I really would have like to had gotten an assembly instructions with the unit. I did finally figure how it goes together. I will know soon if it was a worthwhile purchase. I also would be nice if there were user instructions.