previous next

Grav-im′e-ter.

An instrument for determining the specific gravities of bodies. Nicholson's instrument consists of a hollow ball of brass or copper, having a stem rising from its top which supports a cup or dish. Another dish is suspended from the lower part of the ball by means of a stirrup; this dish is made heavy enough to keep the instrument vertical when placed in a liquid; and the weight of the instrument is such that 1,000 grains placed in the upper dish sinks it in distilled water, so that a mark about the middle of the stem is on a level with the surface of the liquid. See areometer.

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 People (automatically extracted)
Sort people alphabetically, as they appear on the page, by frequency
Click on a person to search for him/her in this document.
Nicholson (1)
hide Display Preferences
Greek Display:
Arabic Display:
View by Default:
Browse Bar: