Object Record

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Title Alidade, model 5205A, made by Keuffel & Esser Co., New York, (1916.)
Object Name Alidade
Catalog Number 2009.006.0233
Collection Keuffel & Esser Company Collection
Credit Museum Collections. Gift of a friend of the Museum.
Description Alidade, model 5205A, made by Keuffel & Esser Co., New York, (1916.) Metal and glass, 20" long x ca. 4" wide x ca. 9" high; blade 20" x 3" with circular holes; separate 5" x 5" compass with two spirit levels; two paper clips; original wood box with hinged lid: manufacturer's printed white celluloid label inside lid. With: telescope cap; sunshade; two nickel plated paper clips. Lacking any printed instructions or manufacturer's printed material. Serial number, 32743, model number and manufacturer's name engraved on blade at telescope post.

Date of manufacture determined from serial number marked on blade below telescope. The number places it as manufactured in 1916 based on "First Instruments of the Year" serial number chart in January 1991 issue of Surveyor's Historical Society magazine, "Backsights."

Also known as a high-post alidade. This model was the least expensive of the three offered in the 35th edition catalog of 1915. It is depicted and described on pages 400-401 of that catalog.

The instrument was part of a "Plane-Table" [plane table] outfit, but it could be purchased separately.

K&E main office and factories were in Hoboken when this item was made.

Date 1916-1916
Year Range from 1916
Year Range to 1916
Search Terms K & E
Keuffel & Esser Co.
Caption right side with telescope cap on
Imagefile 071\20090060233.JPG
Notes Original catalog price $95.00 which adjusted for 2008 dollars is $1922.
Classification Surveying
Business & Commerce
Manufacturing