Inverting Telescope

University College

Accession Number: 2009.uc.26

Instrument Name: Inverting Telescope

Description:

This is a brass telescope with copper-looking lacquer with intact eyepiece but missing its objective lens. It is mounted to adjust vertically in a brass pivot with a screw tightener. It is supported on a rotating brass base–a tripod with leveling screws.

Alternative Name:

Primary Materials: Copper, Metal, Glass

Markings:

On the base of the telescope: “J. Carpentier Paris
1827-2″.

Old Inventory Number = uc26.

Dimensions (cm):

Telescope length = 33 cm, Base diameter (incl. legs) = 17.3 cm

Function:

Used for the “determination of the absolute intensity of the earths magnetic field.” The telescope was mounted so as to be capable of rotation in a horizontal and vertical plane. It was used with a finely divided scale and a magnetometer. One of the earliest instruments used at Toronto as part of the magnetic observatory (see cover). See, W.J. Loudon and J. C. McLennan (1895) “A Laboratory Course in Experimental Physics”. (New York and London: MacMillan and Co.)

Condition:

Good. The metal surfaces are somewhat tarnished. The telescope is missing its objective lens.

Associated Instruments:

Manufacturer: J. Carpentier, Paris

Date of Manufacture: c. 1870

Provenance:

Additional Information and References:

For information on the manufacturer of this instrument, see this UTSIC blog post: Jules Carpentier (1851-1921): A Modern Maker by Erich Weidenhammer.

Donated to UTSIC: No

Historical Notes: