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Engravers' Cement – Escape Pinion

Engravers' Cement

Resin, 1 part; brick dust, 1 part; mix with heat.

Equatorial Clock

A clock which drives an equatorial telescope.

Experiments and Observations of Dr

Robert Hooke, F. R. S." and another, called "The Antiquity of Clock-work."

Emery

The dark colored and non-transparent variety of corundum. See Corundum.

Engine Turning

The wavy, curved lines used as decorations for watch cases. See Rose Engine.

Equation of Time

The difference between mean and apparent, or solar, time.

Escape Pinion

The pinion on the escape wheel staff.