Plumb bob
id:
plumb-bob-245-14085737
title:
Plumb bob
text:
A plumb bob, plumb bob level, or plummet, is a weight, usually with a pointed tip on the bottom, suspended from a string and used as a vertical direction as a reference line, or plumb-line. It is a precursor to the spirit level and used to establish a vertical datum. It is typically made of stone, wood, or lead, but can also be made of other metals. If it is used for decoration, it may be made of bone or ivory. The instrument has been used since at least the time of ancient Egypt to ensure that
brand slug:
wiki
category slug:
encyclopedia
description:
Weighted line used as a vertical reference
original url:
https://en.wikipedia.org/wiki/Plumb_bob
date created:
date modified:
2024-02-07T00:11:00Z
main entity:
{"identifier":"Q12826066","url":"https://www.wikidata.org/entity/Q12826066"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/9/9d/Plumb_bob.jpg","width":978,"height":1449}
fields total:
13
integrity:
15