Glossary · Mechanism
Roller table
The disc on the balance staff carrying the impulse jewel that engages the pallet fork.
Explanation
The roller (table) is the small disc on the balance staff of a lever escapement carrying the impulse pin (ruby pin) that engages the pallet fork. In a double-roller escapement a second, smaller roller provides the safety action. A loose or wrongly positioned roller causes escapement faults that are hard to diagnose without experience.
In the object catalogue
Catalogued objects whose own source record mentions “Roller table”. The quoted line shows where; it is the seller’s or museum’s wording, not independent verification.
