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

产品编号: 30385254

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细节

Brand
Ever Ready Aid
Recommended Uses For Product
Sports
Color
Multicolored
Material
Plastic
Item dimensions L x W x H
12.3 x 4.7 x

📏12" length

📐3 measurement scales

🔄360° rotation

描述

📈 Measure Your Progress, Master Your Recovery!

USER FRIENDLY - Simple to use, making it perfect for both professionals and patients.
TRANSPARENT DESIGN - Clear plastic for effortless observation and accuracy.
PRECISION IN MOTION - Easily determine joint range for optimal recovery.
VERSATILE MEASUREMENTS - Inches and centimeters for comprehensive assessments.
ESSENTIAL FOR THERAPISTS - A must-have for physical and sports therapy professionals.

The Ever Ready First Aid Plastic 12" Goniometer is a vital tool for assessing joint range of motion, featuring a transparent design for easy readings and a 360° head with three scales for versatile measurements. Ideal for physical therapy, sports therapy, and rehabilitation, this goniometer ensures accurate tracking of recovery progress.