Accession Number: 2012.ast.19


This instrument is a tall precision chronometer resembling a grandfather clock. The case is wood with a glass front door closed by two locks on the side. Inside the case, the clock instrument consists of a large white metal face which measure minutes. Two smaller dials on the inside of the larger minutes dial measure seconds and 24-hours. A pendulum consisting of two glass weights hangs from the clock mechanism that can be filled with liquid to increase their weight. A metal cord attached a small weight to a larger weight at the base of case. This mechanism powers the clock.

Alternative Name: astronomical chronometer

Primary Materials: wood, glass, metal


“interior plaque – “”Mean-Time-Eastern Standard, Hours numbered from 1 to 24 beginning at […] midnight [midnight is handwritten]
metal weight – “”EST”"”

Dimensions (cm):

Height = 148, Width = 48.5, Length = 25.5

Function: For precision measurements of time.


good – There is some wear, dust, paint spill and splatter on the topof the instrument

Associated Instruments:


Date of Manufacture: c. 1900


University of Toronto Department of Astronomy

Donated to UTSIC: No

Historical Notes: