Time seismograph

A time seismograph is an object invented by Nate Heywood with assistance from Ray Palmer and Martin Stein to detect time aberrations.

History
Nate Heywood with assistance from Ray Palmer and Martin Stein constructed a device to help pinpoint the epicenter of time quakes in order to prevent temporal aberrations before they happen. While in the Waverider's library, Nate and Amaya witnessed the device working and it detected an aberration originating in December 7, 1987 during the United States' and Soviet Union's negotiations surrounding the INF Treaty.