Screw

Use this image

Can I reuse this image without permission? Yes

Object images on the Ingenium Collection’s portal have the following Creative Commons license:

ATTRIBUTE THIS IMAGE

Ingenium, 1987.2121.007
Permalink:

Ingenium is releasing this image under the Creative Commons licensing framework, and encourages downloading and reuse for non-commercial purposes. Please acknowledge Ingenium and cite the artifact number.

DOWNLOAD IMAGE

PURCHASE THIS IMAGE

This image is free for non-commercial use.

For commercial use, please consult our Reproduction Fees and contact us to purchase the image.

OBJECT TYPE: N/A
DATE: Unknown
ARTIFACT NUMBER: 1987.2121.007

MANUFACTURER: Suss Nandor R.T.
MODEL: Unknown
LOCATION: Budapest, Hungary

More Information

General Information

Serial #: N/A
Part Number: 7
Total Parts: 10
AKA: N/A
Patents: N/A
General Description: PRIMARILY METAL CONSTRUCTION. GLASS OPTICS & THERMOMETER ON .1. SOME SYNTHETIC COMPONENT PIECES. .2 FITTED WITH GLASS SUNSHADE OVER CIRCLE & 2 GLASS LEVEL VIALS; HORIZONTAL CIRCLE DIVIDED ON SILVER. CASES FOR .1-.2, .8-.10 MADE OF WOOD

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: N/A
Width: N/A
Height: 18.5 cm
Thickness: N/A
Weight: N/A
Diameter: 5.4 cm
Volume: N/A

Lexicon

Group: Physics
Category: Geophysics
Sub-Category: N/A

Manufacturer

AKA: Suss
Country: Hungary
State/Province: Unknown
City: Budapest

Context

Country: Canada
State/Province: Ontario
Period: THIS INSTRUMENT USED BETWEEN 1928-1935. THIS TYPE OF INSTRUMENT USED LATE 1920S- EARLY 1930S (REF.1, P.167)
Canada: ONE OF TWO EOTVOS-TYPE TORSION BALANCES PURCHASED FOR JOINT USE OF DOMINION OBSERVATORY & GEOLOGICAL SURVEY. THESE INSTRUMENTS WERE AMONG THE FIRST IN CANADA. A.H. MILLER (1886-1962), USED THESE BALANCES, AND OTHER EQ. IN SOME OF THE EARLIEST GRAVITY SURVEYS & ISOSTACY STUDIES CONDUCTED IN CANADA (REF.2) SEE ALSO 872131
Function: TO MEASURE THE GRADIENT OF GRAVITY AT A SPECIFIC POINT OR LOCATION, AND THE CURVATURE OF THE EQUIPOTENTIAL SURFACE.
Technical: DEV'T BY HUNGARIAN BARON ROLAND VON EOTVOS THE TORSION BALANCE BECAME ONE OF THE MAIN INSTS. USED IN GEOPHYSICAL PROSPECTING IN L.1920S-E.1930S. THE BALANCE CONSISTS OF A HORIZONTAL BEAM WITH A MASS AT EITHER END (ONE ON THE BEAM, ONE SUSPENDED FROM IT), THE WHOLE SYSTEM SUSPENDED BY A TORSION FIBRE. THE BEAM WAS SET IN A PARTICULAR AZIMUTH, RELEASED, AND THE TENSION IN THE SUSPENDING FIBRE NECESSARY TO PRODUCE EQUILIBRIUM NOTED. THE BEAM WAS THEN RESET AND MEASUREMENTS REPEATED, THROUGH A SEQUENCE OF 5 AZIMUTHS. IT TOOK APPROX. 1 HOUR FOR THE BEAM TO COME TO REST. BALANCES HAVING 2 BEAMS, LIKE 872121, CUT TIME IN HALF, REQUIRING ONLY 3 SETS OF OBSERVATIONS. (Ref.1, p.167)
Area Notes: Unknown

Details

Markings: No markings.
Missing: From CA of 02/07/2002 by David Daley: Yes - empty compartment in small trunk suggests missing components
Finish: Unknown
Decoration: N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Suss Nandor R.T., Screw, Unknown Date, Artifact no. 1987.2121, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1987.2121.007/

FEEDBACK

Submit a question or comment about this artifact.