- registering micrometer
- регистрирующий микрометр
Англо-русский технический словарь.
Англо-русский технический словарь.
Meridian circle — Groombridge transit circle of 1806 The meridian circle, transit circle, or transit telescope is an instrument for observing the time of stars passing the meridian, at the same time measuring its angular distance from the zenith. The idea of… … Wikipedia