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📏 Measure with confidence, move with freedom.
The GemRed GR311-L Digital Goniometer is a 12-inch plastic protractor designed for precise joint range of motion measurement with 0.1° accuracy. Featuring a reversible 360° digital display, zero-reset for multiple joint types, and a hold function to freeze readings, it’s ideal for physical, occupational, and sports therapy. Powered by an included lithium metal battery, it’s ready to deliver fast, reliable results both in clinics and at home.
| ASIN | B07C2JM68V |
| Batteries | 1 Lithium Metal batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Metal |
| Best Sellers Rank | #54,897 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #29 in Construction Protractors |
| Customer Reviews | 4.3 4.3 out of 5 stars (417) |
| Date First Available | January 12, 2017 |
| Description Pile | CR2032 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 3.7 ounces |
| Manufacturer | GemRed |
| Material | Plastic |
| Part Number | 82305 |
| Product Dimensions | 12.99 x 5.51 x 1.18 inches |
| Size | 300mm |
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
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