static isometric muscle testing

Does anyone know of an outcome measure for static isometric muscle testing? I'm looking for something to assess joints mid-range.
thanks
Laura

manual muscle testing.... dynamometer?

Muscles: Testing and Function by Florence Kendall i believe is the gold standard is it not?? Amazon Link here

With the US dollar so weak, i am taking the opportunity to buy up big! About AUD$1 = USD$0.93 which hasn't been like that in decades!