inferable

The height of the lower vase is about five feet, which is inferable by our standing by it, and looking over the rim into the limpid basin.

From Scenes and Andventures in the Semi-Alpine Region of the Ozark Mountains of Missouri and Arkansas by Henry Rowe Schoolcraft

Senators learned in the law conceded that if this purpose and effect were declared on the face of the act, or were necessarily inferable from its provisions, it must inevitably be declared unconstitutional.

From Our Changing Constitution by Charles Wheeler Pierson

In this letter, moreover, among other points, it was inferable that his province was ready to leave the said missions of Zambales.

From The Philippine Islands, 1493-1898 - Volume 41 of 55, 1691-1700 Explorations by early navigators, descriptions of the islands and their peoples, their history and records of the catholic missions, as related in contemporaneous books and manuscripts, showing the political, economic, commercial and religious conditions of those islands from their earliest relations with European nations to the close of the nineteenth century. by Emma Helen Blair

So far as the economic interest enters into the constitution of beauty, it enters as a suggestion or expression of adequacy to a purpose, a manifest and readily inferable subservience to the life process.

From Theory of the Leisure Class by Thorstein Veblen

It is fairly inferable, from Lord Byron’s own statements, that his family friends believed this charge. 

From Lady Byron Vindicated A history of the Byron controversy from its beginning in 1816 to the present time by Harriet Beecher Stowe