Images

Manufactured by Argus Inc, Ann Arbor, Michigan. This projector was used for 35mm slides.
Object ID: USGS-000194

Manufactured by WILD Heerbrugg, Switzerland. This instrument was made in the late 1950s- early 1960s and was in service until the late 1970s. It includes its original air-tight and water-tight steel case, as well as its shipping case.
Object ID: USGS-000198

Equipped with a Summaron Lens, 1950s. Manufactured in Leitz, Germany.
Object ID: USGS-000277

With original case.
Object ID: USGS-000287

This type of altimeter is a precision aneroid barometer that translates barometric (air) pressure into altitude. Temperature compensation calculations, as well as calculations to account for diurnal barometric change need to be recorded during use.

Manufactured by Lamotte Chemical Products Company, Chestertown, Maryland sometime after 1930.
Object ID: USGS-000249

This is a first aid kit used in fieldwork in the west. The kit is likely an army surplus item. The kit includes first aid materials for snake bites as well as more common ailments.
Object ID: USGS-000057

The kit contains over 600 pieces and was used at the Bird Banding Laboratory at the Patuxent Wildlife Research Center, Maryland.
Object ID: USGS-000219

This instrument was manufactured by Spencer, Browning & Rust, London. A sextant is used for measuring the altitude of the sun or another celestial body; such measurements can then be used to determine the observer's geographical position or for other navigational, surveying, or astronomical applications.

Manufactured by E.H. Sargent and Company. The set includes the oven, ceramic crucibles, a mortar & pestle, lead tape and stirrers.
Object ID: USGS-000233

Constructed of maple with cast bronze Johnson Head, leather strap, cast steel shoes and attached hooks (probably not original). This tripod is about 50-1/2" in height (closed) and is nearly identical to another tripod in the USGS Collection (USGS-492).

Used in U.S. Geological Survey field work.
Object ID: USGS-000209

Also known as a drawing set, the instruments were used in cartographic work. The instruments include ruling pens and ring head dividers. This set was manufactured by Eugene Dietzgen & Company, Chicago and New York. The set was used by the U.S. Geological Survey Topographic Branch in the early decades of the 20th Century.
Object ID: USGS-000173

Electron & Nuclear Counter, Model #ARA35-1, Type DW-51. Manufactured by Cyclotron Specialties Company. Additional information would be appreciated.
Object ID: USGS-000262

This instrument was manufactured by Keuffel & Esser Company, New York & New Jersey, serial #2300. Stadia Hand Transits are made of up a small telescope with cross and stadia hairs and a circular box which serves as either a magnetic compass or clinometer. The company sold these instruments from 1910 until the 1930s.
Object ID: USGS-000349

type 12" K-17C
Object ID: USGS-000290

This is a pack saddle used by Arnold Hague in the late 1800s. The wooden saddle has leather straps and a cinch used for the animal's comfort when carrying especially large loads. Pack saddles could be used to carry panniers or other large objects.
Object ID: USGS-000014

This is a Coleman lantern used by field scientists at campsites. This particular lantern has a black leather case with a spring inside the lid to stabilize the lantern during travel.
Object ID: USGS-000038

Objects like this canteen and canvas case tell about the daily activities of scientists in the field. Life centered around the campsite and is extremely different than the experiences of today's scientists.
Object ID: USGS-000065

This alidade consists of straightedges with a rigidly-mounted telescope that can be rotated through the vertical angle ±30. The telescope is set on a high standard or post (4 inches in height) to raise it above the table. The telescope for the high standard is 16 power, inverting type with internal focusing.

Manufactured by W. & L.E. Gurley, Troy, New York. The micrometer attachment us a modification of the tangent screw attached to the horizontal axis of the telescope and used for measuring vertical angles in terms of their tangents. Relatively few of these types of alidades are listed in early 1900s property records of instruments used by the U.S.