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- Grand-Val's Perfect Time Indicating Lamp, circa 1880 - Time lamps are much like today's night lights; mainly used in bedrooms. Hour numerals are pressed into the glass reservoir. As the kerosene burned overnight, the diminishing fuel was supposed to indicate the time. Though a clever novelty, they proved unreliable, as the level of consumption was inconsistent.

- circa 1880
- Collections - Artifact
Grand-Val's Perfect Time Indicating Lamp, circa 1880
Time lamps are much like today's night lights; mainly used in bedrooms. Hour numerals are pressed into the glass reservoir. As the kerosene burned overnight, the diminishing fuel was supposed to indicate the time. Though a clever novelty, they proved unreliable, as the level of consumption was inconsistent.
- Grand-Val's Perfect Time Indicator Lamp, 1880 - Time lamps are much like today's night lights; mainly used in bedrooms. Hour numerals are pressed into the glass reservoir. As the kerosene burned overnight, the diminishing fuel was supposed to indicate the time. Though cleverly marketed, they proved unreliable, as the level of consumption was inconsistent. Intended for use as a small bedside or table lamp, this example is unusually large.

- 1880
- Collections - Artifact
Grand-Val's Perfect Time Indicator Lamp, 1880
Time lamps are much like today's night lights; mainly used in bedrooms. Hour numerals are pressed into the glass reservoir. As the kerosene burned overnight, the diminishing fuel was supposed to indicate the time. Though cleverly marketed, they proved unreliable, as the level of consumption was inconsistent. Intended for use as a small bedside or table lamp, this example is unusually large.