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📐 Measure smarter, not harder — the digital goniometer redefined.
The GR311-L-V2 New Version Digital Goniometer by GemRed offers enhanced usability with color-coded buttons, a one-press zero reset, and an invertible display for measuring joint angles in any position. Its hold function freezes readings for easy transfer, powered by a single CR2032 battery. Lightweight and precise, it’s a must-have for physical therapists and professionals tracking range of motion with confidence.
| ASIN | B09NCYM5TL |
| Batteries | 1 Lithium Metal batteries required. |
| Batteries Included? | No |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Metal |
| Best Sellers Rank | #65,573 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #39 in Construction Protractors |
| Customer Reviews | 4.3 4.3 out of 5 stars (422) |
| Date First Available | December 10, 2021 |
| Item Weight | 6.7 ounces |
| Manufacturer | GemRed |
| Package Dimensions | 13.07 x 5.43 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!
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
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!
E**O
Excelente inversión. Puedes ir viendo el avance y resultado de las terapias de cualquier articulación del cuerpo.
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.
G**S
Awesome for PT
Great device. Made taking measurements a breeze.
R**0
It shouldn’t be so hard
I can’t tell you if it works because I can’t get the battery compartment open . It refers to a “tool” to use while pressing the button and pulling it open on both sides. That is one more hand than I have ! Update: They sent a new one, still very difficult to open the battery compartment but I finely got it.
R**S
Great device and easy to use. Helps speed up assessments
M**I
Excellent quality easy to take measurements
G**5
Excellent value for the money. Works as designed.
T**N
Digital function helpful . Easy to use . Would recommend it to my professional colleagues
5**0
Se requiere tiempo para acostumbrarse a trabajar con el pero buen producto
Trustpilot
2 weeks ago
5 days ago