---
product_id: 80929258
title: "GR311-L Digital goniometer"
brand: "gemred"
price: "Rp910871"
currency: IDR
in_stock: null
reviews_count: 13
category: "Gem Red"
url: https://www.desertcart.id/products/80929258-gr311-l-digital-goniometer
store_origin: ID
region: Indonesia
---

# 12-inch precision protractor 360° reversible digital readout Hold function for data freeze GR311-L Digital goniometer

**Brand:** gemred
**Price:** Rp910871
**Availability:** ❌ Out of Stock

## Summary

> 📏 Elevate your therapy game with precision that moves with you!

## Quick Answers

- **What is this?** GR311-L Digital goniometer by gemred
- **How much does it cost?** Rp910871 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/80929258-gr311-l-digital-goniometer)

## 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 measurement for effortless recording and sharing.
- • **Ready Out of the Box:** Includes battery for immediate use—no downtime, just results.
- • **360° Reversible Display:** Read your results 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 12" Digital Goniometer is a lightweight, plastic protractor designed for accurate joint range of motion measurement in physical and occupational therapy. Featuring a 360° reversible digital display with 0.1° precision, a zero-reset function for versatile joint use, and a hold feature to freeze readings, it ensures fast, reliable assessments both in clinics and at home. Battery included for immediate use.

## 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 |
| Best Sellers Rank | #48,940 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #22 in Construction Protractors |
| Brand Name | GemRed |
| Customer Reviews | 4.3 4.3 out of 5 stars (436) |
| Item Dimensions | 12.99 x 5.51 x 1.18 inches |
| Item Weight | 105 Grams |
| Manufacturer | GemRed |
| Material Type | Plastic |

## 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

![GR311-L Digital goniometer - Image 1](https://m.media-amazon.com/images/I/6114uIsrQZL.jpg)
![GR311-L Digital goniometer - Image 2](https://m.media-amazon.com/images/I/61tQrxpRrmL.jpg)
![GR311-L Digital goniometer - Image 3](https://m.media-amazon.com/images/I/71n-ozBOehL.jpg)
![GR311-L Digital goniometer - Image 4](https://m.media-amazon.com/images/I/61zutkU4QuL.jpg)
![GR311-L Digital goniometer - Image 5](https://m.media-amazon.com/images/I/71rQcHahk7L.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

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.id/products/80929258-gr311-l-digital-goniometer](https://www.desertcart.id/products/80929258-gr311-l-digital-goniometer)

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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-04-23*