
1. Neck angle - Generally speaking, an ergonomic guitar has a more progressive curve for its neck. This permits more natural finger motion up and down the fretboard. This also helps with the guitarist's general comfort by preventing excessive flexing of their back and neck while playing.
2. Neck depth - A deeper neck is easier for the fingers to reach and makes for a more comfy hand grip. A deep neck also allows the string to be closer to the fretboard and provides more stability to the strings when worrying.
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3. Rest point rise - This is the height of the middle of the fretboard directly above where the guitar is resting. The measurement is made by forecasting a line straight up from where the guitar rests on the leg and ending it about midway up the fretboard (in between the 3rd and 4th strings). The darker blue lines in the image above indicate this measurement. This is a good procedure of how high the strumming hand will be above the guitar's lap when playing and is a consider the neck offset of ergonomic electrical guitars.
4. Stubborn belly carve - The stubborn belly carve is a feature that is discovered on many guitars. It's a great ergonomic feature because it assists with the positioning of the guitar when standing and seated. It's simple to find on most guitars that are produced today and is an excellent method to ergonomically focus the guitar on your legs when playing.
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5. Left hand reach - The length of the purple line in the image above shows how far your left hand will require to take a trip up and down the fretboard when playing. This is a beneficial measure because it tells you how high you need to keep the fretboard to avoid having your fingers hit the body of the guitar and also offers you an indication of just how much of a discovering curve there will be when changing to an ergonomic guitar.
6. Overall weight - A lighter guitar has less total weight for your musculoskeletal system to support and is generally much easier to stabilize on a strap. Nevertheless, a lighter guitar can have some downsides such as being more susceptible to neck dive when playing and a lack of sustain due to less mass in the neck.
Embodiments of the ergonomic guitar lower tension on the guitar player's ideal arm by offering an arm relief cut 52 and a belly cut 66. The belly cut 66 and arm relief cut 52 permit the guitarist to support the guitar easily with their right arm while the guitar is tilted in between 0 and 64 degrees. This alleviates stress on the guitarist's ideal shoulder from excess flexion, abduction and internal rotation.