Isometrical refers to the quality of having the same measure or size. Synonyms for isometrical include isometric, uniform, proportional, symmetrical, equal, even, identical, consistent, invariable, and unvarying. Isometric is a term used in physics to describe a system where the mechanical work done is constant. Uniform describes a consistent or unchanging size or pattern. Proportional and symmetrical relate to the idea of having equal or balanced parts. Equal and even are simple synonyms for having the same size or measure. Identical and consistent convey a sense of sameness or similarity. Invariable and unvarying emphasize the unchanging nature of the thing being described.