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๐ Master every angle with GemRedโs smart digital goniometer!
The GemRed 12" Digital Goniometer GR311 New Version is a precision tool designed for accurate joint range of motion measurement. Featuring color-coded buttons for easy operation, an invertible display for awkward angles, and a hold function to freeze readings, it streamlines physical therapy and occupational assessments. Powered by a CR2032 battery and weighing just 6.7 ounces, itโs a compact, reliable companion for professionals and self-monitoring alike.














| ASIN | B09NCYM5TL |
| Batteries | 1 Lithium Metal batteries required. |
| Batteries Included? | No |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Metal |
| Best Sellers Rank | #58,366 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #31 in Construction Protractors |
| Customer Reviews | 4.3 4.3 out of 5 stars (436) |
| Date First Available | December 10, 2021 |
| Item Weight | 6.7 ounces |
| Manufacturer | GemRed |
| Package Dimensions | 12.83 x 5.51 x 1.14 inches |
| Part Number | 82305 |
| Size | 300mm(New Version) |
C**H
Eliminating human error
Great! I use it everyday!
4**C
Good quality
Accuracy that is almost perfect, and good enough for almost any use. I love the digital readout and the fact that it can be oriented in any direction. It's easy to read. I think it's necessary for me to monitor my own progress with physical therapy after knee surgery. BUT---one would think that the company would benefit from getting someone who can write with proper English grammar and sentence structure so the directions make sense. It's a small instruction sheet but go figure what they are trying to say. That is my only disappointment with the product. It might as well be written entirely in Chinese!
R**E
Accurate and easy-to-use digital goniometer
Accurate and easy-to-use digital goniometer that takes the guesswork out of ROM measurements. The large display is clear and responsive, and it delivers consistent readings for joints and movement tracking. Great tool for physical therapy, rehab, or clinical use.
B**Y
Not needed but great to have!
As a PT, It is nice to just quickly line things up and not have to look at all the small lines. I don't need it to treat, but it is fun to have!
Y**K
Works well when it does?
Worked well in the beginning. But after 3 months, the battery becomes loose which causes a lot of errors in the measurements. Can't use it without the power because the black part covers the numbers
P**T
Good Gonio, but not even sure how to read it!
First time using a digital gonio and I have no clue how to read it. I was taking measurement for a patient's knee flexion and the digital reading was way off. Looking at the display numbers on the ruler had a different read than what was shown on the digital display. Am I missing something, or am I calculating the difference between the two read? Any help would be appreciated.
C**Y
Inaccurate reads
Checking for accuracy/inaccuracies, I set it at 90" and it read 74.7 and again set at 0/180 and it read 15.4. I am getting occasional correct reads but not trusting with my clients at this point. I had been checking several other ranges but figured those would be easiest to tell inaccuracy. Darn!!
E**O
โAvance de tus terapiasโ
Excelente inversiรณn. Puedes ir viendo el avance y resultado de las terapias de cualquier articulaciรณn del cuerpo.
R**S
Useful, accurate and fast
Great device and easy to use. Helps speed up assessments
M**I
Excellent product
Excellent quality easy to take measurements
G**5
Goniometer.
Excellent value for the money. Works as designed.
T**N
Useful and works well . Fair price
Digital function helpful . Easy to use . Would recommend it to my professional colleagues
5**0
Excelente producto
Se requiere tiempo para acostumbrarse a trabajar con el pero buen producto
Trustpilot
2 months ago
5 days ago