is this hard plastic? or does it bend easily?

It is pretty stiff, but will bend gently and slightly ~10-30 degrees under pressure, rather than break. But left alone, it stays straight.

What the uncertainty principle on this goniometer?

I'm not sure I understand the question. I used it to measure my knee after total knee replacement. It lets you know the degrees of where your at for the curve and when its straight. 12 years ago your knee had to be 180 for it to be straight and then they liked it around 110 for the bend. Last year when I had the other knee done you came out of surgery at 180 degrees so you only needed to measure for the bending of your knee

Will this work for elbow ?

It is designed to measure angles of joints, so although its larger size accomodates hip and knee joints, it also may be used to check elbows.

What is the radius of the ruler?

From the center pivot to the end of the arms is ~10".

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Ever Ready First Aid Plastic 12" Goniometer 360 Degree ISOM

Ever Ready First Aid Plastic 12" Goniometer 360 Degree ISOM

Product ID: 30385254

Details

Brand
Ever Ready Aid
Color
Multicolored
Number of Pieces
1
Recommended Uses For Product
Sports
Special Feature
Reusable

📏12-inch precision length

🔄360° multi-scale measurement

🔍transparent for clear readings

AED 38

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Description

📐 Measure your comeback with precision and style!

LIGHTWEIGHT DURABLE - Only 2.4 ounces of sturdy plastic—built to last through countless therapy sessions.
PRECISION RANGE TRACKING - Easily measure joint motion with 360° accuracy for confident recovery monitoring.
CRYSTAL CLEAR TRANSPARENCY - Place directly on limbs for effortless, error-free readings every time.
TRUSTED BY PROS PATIENTS - Top-rated tool with 4.7 stars from 3,500+ users, essential for rehab and sports therapy.
VERSATILE MULTI SCALE DESIGN - Three distinct scales plus dual-unit ruler (inches & cm) for professional-grade flexibility.

The Ever Ready First Aid 12" Plastic Goniometer offers a transparent, lightweight design with a 360° ISOM dial featuring three scales and a dual-unit ruler. Ideal for physical and sports therapy, it provides precise joint range of motion measurements to track recovery progress. Trusted by thousands, this reusable tool combines professional accuracy with user-friendly clarity.

Specifications

ASIN	B01G9AR62O
ASIN	B01G9AR62O
Best Sellers Rank	#91,525 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #44 in Construction Protractors #912 in Activity, Health & Wellness Monitors
Brand Name	Ever Ready First Aid
Color	Multicolored
Customer Reviews	4.7 4.7 out of 5 stars (3,569)
Date First Available	May 27, 2016
Included Components	goniometer
Item Dimensions	12.3 x 4.7 x 0.1 inches
Item model number	121000
Manufacturer	Ever Ready First Aid
Manufacturer	Ever Ready First Aid
Manufacturer Part Number	121000
Material Type	Plastic
Model Number	121000
Number of Pieces	1
Other Special Features of the Product	Reusable
Product Dimensions	12.3 x 4.7 x 0.1 inches; 2.4 ounces
Recommended Uses For Product	Sports
UPC	710465376021
Unit Count	1 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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AED 38

Duties & taxes included

In stock

Sold byAmazon UAEDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to UAE.

Secure transaction

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Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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Great experience from order to delivery. Highly recommended!

1 week ago

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