Barrel:
Cylinder on the barrel arbor. When winding the weight the cable is wound around the circumference of the barrel. The barrel has grooves like a thread to prevent the cable from scratching.

Barrel wheel:
First wheel in the gear train. Mounted on the barrel arbor together with the barrel, the ratchet and the maintaining power device.

Ball bearing
A bearing in which balls roll in a groove between the inner and outer ring. The rolling friction is very low. This is why ball bearings have very low friction and almost no wear.

Beat adjuster:
Device to adjust the beat. With a screw your can adjust the relationship between the pallets and the pendulum by tilting the crutch.

Bezel:
Dial ring.

Blueing:
Heat treatment of carbon steel. If polished or ground steel is heated to ca. 300°C an oxide builds up on the surface which appears blue.

Brass:
Alloy of copper and zinc. The gears of the Sattler Clocks are made of brass. As protection against corrosion they are gold plated.

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