[f. Gr. εἶδο-ς form + γράφειν to sketch.] (See quot.)
1801. Hutton, Course Math. (1828), II. 81. Professor Wallace’s eidograph may be advantageously employed.
1869. Eng. Mech., 3 Dec., 288/1. The eidograph is a correct instrument for enlarging or reducing drawings.
