Tonomat Applanation TonometerOcular Instruments, Inc.mid 20th centuryAn Impression-applanation tonometer (model OTM-1). Includes tonometer, a bottle of Aplacote dye, two tubes of disposable tonometer endplate caps, a pad of transfer and recording paper, and a glass disc with a measuring scale. Includes two pages of instructions, as well as a guide printed under the lid of the box. Designed by Adolph Posner and Richard Inglima.still image