# Nobert's lines

> English word · Noun

## Definitions
1. Fine lines ruled on glass in a series of groups of different closeness of line, and used to test the power of a microscope.

## Etymology
After F. A. Nobert, German manufacturer.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/nobert-s-lines