NEIKO 20713A Digital Tachometer, Noncontact Laser Photo Sensor with 2.5 to 99,999 RPM Accuracy, RPM Gauge Marker with Batteries Included

Works as stated. I have two of them, one at lake , one at home. Great way to check on the viability of car/ boat batteries. Worth every penny!

Works awesome Used it to set the idle on our Mitsu

I needed this device to check rpm’s on a farm tractor PTO shaft and later to check the RPMs on a portable generator and also a flywheel on top of an old outboard boat engine. In all 3 cases this device had a little trouble giving a reading at first but after about 10seconds it settled down and gave an accurate reading. I gave it 4 stars instead of 5 because once the initial accurate reading was obtained it would start bouncing around a lot giving wildly varying readings but would shortly (within a few seconds) settle down and return back to an accurate reading. I know it was accurate because it was within 100 RPMs of the old analog outboard tachometer reading at 2000 RPMs all the way up to 5000 RPMs. It also gave accurate readings on the much slower farm Tractor PTO shaft at top RPM of 600.

It works great very simple to use it seems to be pretty on point with where the RPMs should be at on the motors I have tested for the price and just to get an idea of where a motor stands at roughly I think it’s a great purchase would highly recommend very simple to use and the batteries actually last quite some time review is a little late but I bought this thing a while ago and it still running on the same ones and I have used it multiple times thank you everyone if you need a good tachometer and don’t wanna spend a bunch of money that’s a great road to go down and it doesn’t look cheap either it actually looks really nice and well-built so I was surprised I thought I might get some thing in the box when it arrives with that look like maybe a brick with the hole drilled into it may be a sticking out and possibly I don’t know a fox tail hanging off the end so you can see the turbulence of the motor turning as the fox tail goes back-and-forth and that is the way that I might’ve been counting my RPMs I have no idea I don’t even know where I came up with this thing that I’m talking about right now but anyways it works great try it thanks everyone highly recommend will buy again and it arrived fast

I bought this particular tachometer, because I own several tools made by Neiko, and they're quality tools. I used it to test my new 1.5kw spindle motor and vfd.It's important to use a small piece of the reflective tape on whatever you're testing. The tape wasn't sticking well to the spindle motor, because of the packing grease. Even after cleaning the collet chuck, it came off. So, I put a piece of non reflective tape on the chuck, and a small piece of the included reflective tape on top of it, and it's still holding.It was with the Neiko tachometer that I discovered that my new vfd display wasn't defaulted to rpms. That sounds like something that would be obvious, but my vfd reads out "r" before frequency, not rpms, so I thought r240 was 24000 rpms; it was a frequency of 240 (go figure). When I realized what was going on, I was able to correct the vfd programming so that it defaulted to rpm readout. I found that the vfd was correct to minus 35-50 rpms. The Neiko reading was rock solid, and consistent through 6 different spindle speeds. I didn't find a difference in reading based on distance from the source; the reading was the same whether taken 4" away, or 4' away.It came with a battery, which worked. But, I prefer a good alkaline battery over a mercury battery, so I'm storing it with a 9v alkaline. I do not store my battery operated tools with batteries inserted; I store the batteries with them, but not inserted.The storage pouch is nice. I'm storing the tachometer in the cnc table drawer. The neiko tachometer came with a zippered pouch, quite a bit of reflective tape (I'm only using about 3/16"), a 9v battery, and instructions.

Works as it should and simple to use. Readings are easy to see. It is accurate. The smoke is normal for first few uses and will stop .

Why did you pick this product vs others?:It was affordable and I’ve had success with Neiko’s other products. Instructions were to insert 9v battery into the device and the + and - terminals were marked inside case. Then battery would not fit according to polarity. So squeezing the pos terminal made it fit then I discovered the terminal marks were backwards! That means I the battery got warm and could have damage.