A pendulum impulse clock by Scott, the five glass case, with a…
click the photo to enlarge
A pendulum impulse clock by Scott, the five glass case, with a nickel plated surround, and a mirror to rear panel. The nickel plated pillars enclosing a white enamel dial with Arabic numerals. Batterycompartment in walnut base, 44 cm high, 30 cm wide, 20 cm deep

You must be a subscriber, and be logged in to view price and dealer details.

Subscribe Now to view actual auction price for this item

When you subscribe, you have the option of setting the currency in which to display prices to $Au, $US, $NZ or Stg.

This item has been sold, and the description, image and price are for reference purposes only.
  • Pendulum - The pendulum was discovered around 1602 by Galileo Galilei, and was adopted for time keeping by the Dutch mathematician and natural philosopher, Christiaan Huygens, who excelled in astronomy, physics, and horology.

    The pendulum comprises a metal rod usually of brass or steel with a metal disk, known as a bob, at the end. The movement of the pendulum is driven by weights or a spring, and as a pendulum swings in a regular arc, it was found accuracy could be controlled to within a few seconds a week.

    Timekeeping can be adjusted by changing the height of the bob on the rod, making the pendulum either swing slower or faster.

    The disadvantage of the pendulum was that changes in temperature also changed the length of the pendulum, interfering with the accuracy of the clock, and so in the 18th century two types of mercurial pendulums were invented which countered the movement in the steel rod.

    The pendulum was the world's most accurate timekeeping technology until the invention of the quartz clock, regulated by a quartz crystal, in 1927.

Visually similar items

A French brass cased regulator mantel clock. 23 cm high, 13 cm wide, 12 cm diameter.

Sold by in for
You can display prices in $Au, $US, $NZ or Stg.

Japy Freres brass crystal regulator clock with a key & pendulum. Height 28 cm

Sold by in for
You can display prices in $Au, $US, $NZ or Stg.

German timber cased inlaid mantle clock flanked by columns. Height 32 cm

Sold by in for
You can display prices in $Au, $US, $NZ or Stg.

A French brass and glass panelled regulator mantle clock with signed dial, 35 cm high

Sold by in for
You can display prices in $Au, $US, $NZ or Stg.