Difference between revisions of "Ink pencil"
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== Description == | == Description == | ||
| − | A pencil that produced an unerasable, or indelible, line. Ink pencils were introduced in 1859. The writing lead | + | A [[pencil]] that produced an unerasable, or indelible, line. Ink pencils were introduced in 1859. The writing lead contained [[silver nitrate]] in a [[clay]] matrix and was mounted in a wooden handle. The silver nitrate darkened with exposure to light. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
Latest revision as of 15:23, 20 September 2022
Description
A Pencil that produced an unerasable, or indelible, line. Ink pencils were introduced in 1859. The writing lead contained Silver nitrate in a Clay matrix and was mounted in a wooden handle. The silver nitrate darkened with exposure to light.
Synonyms and Related Terms
indelible pencil; solid ink pen