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Extech 461891 Contact Tachometer

Free shipping on orders over $29.99

$229.81

$ 97 .99 $97.99

In Stock

1.Style:461750


About this item

  • Make contact measurements of rotating objects
  • Measure linear surface speeds in ft/min or m/min using the three accessory wheels provided
  • 0.05% accuracy
  • Recalls Last/Max/Min values


The 461891 is a contact Tachometer. Surface wheels measure contact surface speeds (10 to 9,999 rpm) of rotating objects. The memory button holds last reading and recalls min/max readings display. Complete with wheels for linear surface speed (0.2 to 6560 feet/minute; 0.05 to 1999.9 meters/minute) or RPM measurements. Comes with cone tip, flat tip and spare wheel for surface speed measurements, four AA batteries, carrying case, and user manual.


Ktyrra
2025-09-03 18:42:10
Serves my needs. We tried other models a bit more expensive. This item delivers what it promises.
David Kirchner
2025-08-26 13:07:54
Been using one like this for a few years on elevator governors highly recommend
Jeff Wallin
2025-06-10 18:29:04
I have to know the speed of production lines for my work. This is very easy to use and is dead on accurate.
Customer
2025-04-15 16:37:00
Tips come out too easily. 3 separate applications with one fixed wheel and add on tips. One for shaft end with a high center (tiddie) one for center drilled (negative shaft end) Problem is the tips come out too easily and are hard to keep up with. It needs a more secure connection, extra tips and a case to keep everything in.I would change my rating if I could find more tips. HELP!?
Sparky Kayaker
2025-03-20 17:36:03
Perfect for what I needed it for - measuring conveyor belt speeds. Compared to my full size tach, it has much less variation in readout when reading the same conveyors.My one complaint is that there is no way of keeping that little rubber cap on the top (even though I don't use it for radial measurements). I tried crazy gluing it on, and it still came off. Again, I don't need it, but I dislike having spare pieces for things.One suggestion would be for a wrist strap. The first one I bought got knocked out of my hand by a carton going by at 540 fpm on the conveyor (it wasn't supposed to be there). I lost it due to the length of the conveyor and the high speed of the sorter in the DC. My husband drilled two holes in the casing of my second tach and put a camera strap through it. The next time I was measuring the same conveyor (you guessed it), another errant carton came by and knocked into my hand. Thanks to the wrist strap, I didn't loose it.
acamay
2025-03-12 16:35:34
This product works as it is designed to. Unfortunately that didn't exactly match what I tried to do with it. I found that I could not accurately center the rubber tips on the flywheel I was trying to measure, so they kept falling off. Not the fault of the product, it was just outside of its designed use. On the end of a shaft with a drilled center detent it works fine, and the linear motion wheel makes linear speed measurement easy as well. For checking the RPM of small engines, however, choose the optical tachometer over this contact model.
Diessdorf
2025-01-12 14:08:29
Good interface, easy to use.
Duane W. Schultz
2024-12-23 21:21:30
The rubber tips are hard to get flush to there mounting tip. For the price it works fairly well, however for a hand held unit it's a bit unstable. I think the reading button should lock in place, so you can focus more on the contact tip.
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