The phrase "adjustment range" refers to the range or extent by which something can be changed or modified. It indicates the maximum or minimum limits within which adjustments or alterations can be made. Full definition
Text adjustments range from replacing a few words, correcting punctuation, adding additional quotes and other information, to completely replacing sections of cover text. (archwaypublishing.com)
The wide adjustment range makes this a good choice for small dog breeds. (geekwrapped.com)
The seats have generous adjustment range, but the thick doors and massive center console limit hip and knee room. (cars.com)