---
product_id: 80929258
title: "12\" Digital Goniometer 360 Degree Physical Therapy Plastic Protractor for Joint Range of Motion ROM Measurement"
brand: "gemred"
price: "€ 51.80"
currency: EUR
in_stock: true
reviews_count: 13
category: "Gem Red"
url: https://www.desertcart.de/products/80929258-12-digital-goniometer-360-degree-physical-therapy-plastic-protractor-joint
store_origin: DE
region: Germany
---

# 12-inch precision protractor 360° reversible digital readout Hold function for frozen readings 12" Digital Goniometer 360 Degree Physical Therapy Plastic Protractor for Joint Range of Motion ROM Measurement

**Brand:** gemred
**Price:** € 51.80
**Availability:** ✅ In Stock

## Summary

> 📏 Measure with confidence, move with freedom.

## Quick Answers

- **What is this?** 12" Digital Goniometer 360 Degree Physical Therapy Plastic Protractor for Joint Range of Motion ROM Measurement by gemred
- **How much does it cost?** € 51.80 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/80929258-12-digital-goniometer-360-degree-physical-therapy-plastic-protractor-joint)

## Best For

- gemred enthusiasts

## Why This Product

- Trusted gemred brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Instant Data Freeze:** Hold function locks your reading for effortless recording and sharing—perfect for progress tracking.
- • **Ready Out of the Box:** Includes lithium metal battery for immediate use—no downtime, just results.
- • **360° Reversible Display:** Read measurements comfortably from any angle—no awkward twisting needed.
- • **Pinpoint Accuracy at 0.1°:** Experience clinical-grade precision that eliminates guesswork in every joint measurement.
- • **Versatile Joint Compatibility:** Reset zero degree feature adapts seamlessly to measure all major joints with ease.

## Overview

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.

## Description

Buy GemRed 12" Digital Goniometer 360 Degree Physical Therapy Plastic Protractor for Joint Range of Motion ROM Measurement: Occupational & Physical Therapy Aids - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Eliminating human error - Great! I use it everyday!
Review: 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!

## Features

- 【Application】GemRed digital goniometer is very helpful in determining joint range of motion accurately in physical therapy, occupational therapy, sports therapy, and rehab program. It speeds up the ROM examination in clinic and at home.
- 【Reversible Digital Readout】This goniometer is as accurate as 1°. Digital display reads in 1 demical, which tells the difference of even 0.1°. The display could be oriented in any direction for confortable measurement and reading.
- 【Working for most joints】Reset zero degree feature enables measuring different joints with ease, making it versatile and customizable.
- 【Hold Function】Hold function allows you to freeze the result for transferable and easy-to-read data.
- 【Battery】Included battery ensures the device is ready for immediate use, making it efficient and user-friendly.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 |

## Product Details

- **Brand:** GemRed
- **Item Weight:** 105 Grams
- **Item dimensions L x W x H:** 12.99 x 5.51 x 1.18 inches
- **Manufacturer:** GemRed
- **Material:** Plastic

## Images

![12" Digital Goniometer 360 Degree Physical Therapy Plastic Protractor for Joint Range of Motion ROM Measurement - Image 1](https://m.media-amazon.com/images/I/6114uIsrQZL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Eliminating human error
*by C***H on October 18, 2025*

Great! I use it everyday!

### ⭐⭐⭐⭐⭐ Good quality
*by 4***C on October 31, 2023*

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!

### ⭐⭐⭐ Works well when it does?
*by Y***K on November 27, 2025*

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

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-03*