previous next

El′e-vating-screw.

One beneath the breech of a piece of ordnance, to give the elevation or vertical direction to the piece. In fieldpieces it is bedded in the stock immediately under the basering of the gun, which rests on the top of the screw. The latter is turned by four handles.

In theodolites and other geodetical and astronomical instruments a similar contrivance is used for leveling the instrument. See also jack-screw, etc. See list under hoisting.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 United States License.

An XML version of this text is available for download, with the additional restriction that you offer Perseus any modifications you make. Perseus provides credit for all accepted changes, storing new additions in a versioning system.

hide Places (automatically extracted)

View a map of the most frequently mentioned places in this document.

Download Pleiades ancient places geospacial dataset for this text.

hide Display Preferences
Greek Display:
Arabic Display:
View by Default:
Browse Bar: