Diplograph
Dip´lo`graph
n. | 1. | An instrument used for double writing, as one for producing embossed writing for the blind and ordinary writing at the same time. |
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
n. | 1. | An instrument used for double writing, as one for producing embossed writing for the blind and ordinary writing at the same time. |