Editing Handle (section)

== General design criteria ==
[[Image:Tool-pliers.jpg|thumb|Flat-nose [[pliers]] with [[thermoplastic]] handles]]
[[File:Spade with adjustable handle - Ivan Topalovic Nursery Lipolist.jpg|thumb|Spade with handle]]
The three nearly universal requirements of are:
# Sufficient strength to support the object, or to otherwise transmit the force involved in the task the handle serves.
# Sufficient length to permit the hand or hands gripping it to comfortably exert the force.<ref>{{Citation
 | last =Schoenmarklin
 | first =R W
 | title = Effects of handle angle and work orientation on hammering: II. Muscle fatigue and subjective ratings of body discomfort
 | journal = Human Factors
| volume =31
 | issue =4
 | pages =413–420
 | year =1989
 | doi =10.1177/001872088903100405
 | pmid =2583726
 | url = https://ergonomics.osu.edu/sites/default/files/uploads/Publications/1989/HumanFactors_1989_31-4_413-420.pdf
| access-date = 24 June 2023
}}</ref>
# Sufficiently small [[circumference]] to permit the hand or hands to surround it far enough to grip it as solidly as needed to exert that force.<ref>{{Citation
 | last =Liao
 | first =Kun-Hsi
 | title = Optimal Handle Grip Span for Maximum Hand Grip Strength and Accurate Grip Control Strength Exertion according to Individual Hand Size
 | journal = Osteoporosis & Physical Activity
| volume =4
 | issue =2
 | pages =
 | year =2016
 | url = https://www.researchgate.net/publication/305273011
| access-date = 24 June 2023
}}</ref>