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Miniature light bulbs


This object is a small cardboard box containing 24 miniature incandescent light bulbs. The bulbs are nestled in a brown fibrous, cotton-like packaging material. Each bulb has a screw base. The glass bulb of each is tear-drop shaped and the filament spiral-shaped.

Accession Number: 2018.ast.57

Alternative Name: Incadescent light bulbs, lamps.

Primary Materials:

Cardboard, Glass, Metal: Iron Alloy, Fabric


In pencil written on the top of the box: “Small lamps for MK IX SEXTANT”

Underneath that “No!”

Dimensions (cm):

Box: Height = 2.8, Width = 6, Length = 9; Bulbs: Height = 1.5, Diameter = 0.5.


The note on the box indicates that these bulbs may have been for use in the the Mk IX Sextant.


Very Good: The box is in good condition, although it appears to have been used more than once. There is evidence a former label has been removed. The bulbs appear unused and are in excellent condition, although the metal is slightly dulled from age.

Associated Instruments:

Manufacturer: Unknown

Date of Manufacture: 20th Century


This object was likely moved from the David Dunlap Observatory in Richmond Hill in 2008, upon the sale of the observatory. It was stored at the Department of Astronomy and Astrophysics until 2017, when it was moved to a new storage location in McLennan Physical Laboratories.

Additional Information and References:

Historical Notes: