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The Encyclopedia of Horology

Tool · Nocturnal

Applewood Nocturnal

Partially verified

This maritime device, known as a nocturnal or night-dial, dates to 1680-1720 and is crafted from applewood. It functions by measuring the position of stars relative to Polaris to determine time at night. The instrument comprises a circular body with an integrated handle, featuring a distinct openwork heart-shaped design and a trefoil terminal. The primary disc contains engraved markings, with an outer scale indicating months and days, and an inner scale representing hours. Operation involves setting the inner disc to the current date and aligning Polaris through the central aperture, followed by rotating a pointer to a selected reference star to read the time. The object was donated to the Victoria and Albert Museum by Miss Eleanor C. Roper.

Front view of the engraved applewood nocturnal showing the pointer and central aperture.
Front view of the engraved applewood nocturnal showing the pointer and central aperture. — Victoria and Albert Museum, London. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
collections.vam.ac.uk
Category
Tool · Nocturnal
Maker / attribution
Not established
Reference
Not recorded
Catalogue / lot identifier
W.22-1954
Source-reported date
1680-1720
Source-reported place
England

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Construction and Design

The instrument is constructed from carved applewood, featuring a roughly circular main body and an elongated handle. The handle is characterized by a central openwork section in the shape of a heart, which terminates in a trefoil motif. The overall form is designed for horizontal handling during use.

The surface of the wood bears extensive incised markings and engravings. These markings form the scales necessary for celestial calculation, specifically aligning the device with the temporal data required for nocturnal timekeeping.

Evidence for this section
  • “Engraved applewood nocturnal, a maritime device for telling the time at night from the stars.”
  • “The disc is in roughly circular form for horizontal holding by a handle with openwork heart-shaped device and trefoil terminal.”

Operational Function

As a nocturnal, this device was utilized to determine the time of night by observing the rotation of specific stars around Polaris. The user would set the inner disc according to the calendar date. By sighting Polaris through the central aperture, the user could then rotate the pointer to a reference star.

The alignment of the pointer relative to the scales on the disc provided the time. The instrument served a similar purpose to a sundial but operated exclusively under stellar conditions, thus earning the designation of a night-dial.

Evidence for this section
  • “This maritime device would have been used to measure time, based on the position of the stars in relation to Polaris, the North Star.”
  • “The ‘pointer’ would then be rotated to the chosen ‘reference star’, which would give an indication of the time.”

Provenance and Identification

The object is recorded in the museum's collection under the accession number W.22-1954. It was formally presented to the collection by Miss Eleanor C. Roper, originating from Croydon, Surrey.

The lack of a specific maker's mark necessitates that the item be categorized as the work of an unknown creator, though it is attributed to English production between 1680 and 1720 based on its design and material characteristics.

Evidence for this section
  • “Given by Miss Eleanor C. Roper, Croydon Surrey (RF 54/2060)”
  • “Maker: unknown (makers)”
  • “English, 1680-1720.”

Open research questions

  • Does the specific arrangement of stars engraved on the disc indicate a particular region of use?
  • Are there traces of original finish beneath the current surface of the applewood?

Source evidence

Recorded claims and source quotations for Applewood Nocturnal
FieldSource-reported valueSource quotation
Makerunknown“Maker: unknown (makers)”
Date1680-1720“Date: 1680-1720”
Place of originEngland“Place of origin: England (made)”
MaterialApplewood“Materials and techniques: Applewood, carved.”
Accession numberW.22-1954“Accession number: W.22-1954”
DonorMiss Eleanor C. Roper“Given by Miss Eleanor C. Roper, Croydon Surrey”

Visible details

  • Openwork heart-shaped handle terminal
  • Incised month and day scales on the disc face
  • Central aperture for Polaris sighting
  • Trefoil-shaped handle tip

Research qualifications

  • Maker is listed as unknown
  • Precise manufacture date is an approximate range

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

Nocturnal

Reviewed 2026-10-26 · Record 1cef8abbc2

Terms in this record

Glossary explanations for terms named in this object’s record.