EG&G ortec 416A  Gate $ Delay Generator - Fully Functional-

Description

ortec 416A Gate $ Delay Generator - Fully Functional-.
Provides adjustment of the delay, width, polarity, and amplitude of gating pulses
Positive or negative polarity input pulse
Time delay from 0.1 to 110 µs
Output pulse width from 0.4 to 4 µs
Excellent time delay stability
The ORTEC Model 416A Gate and Delay Generator accepts either polarity of input logic pulse, provides a delay of up to 110 µs, and furnishes an output logic pulse with selected amplitude, polarity, and width.
https://www.ortec-online.com/products/electronics/delays-gates-and-logic-modules/416a
It may have some cosmetic wears/scratches  but it is fully functional.