The Diary of Samuel Pepys
Daily entries from the 17th century London diary
The Diary
Home
Archive
Summary
1893 Introduction
Letters
Encyclopedia
All categories
Map
Family tree
In-Depth Articles
Site News
Recent Activity
About
About this site
About the text
FAQ
Annotation guidelines
Email and RSS
Supporting this site
User
Log in
Register
Encyclopedia
/
Science, technology, health
/
Scientific instruments
Scientific instruments
19 Topics
Calculating machines
Camera obscura
Clocks and watches
Double horizontal dial
Globes
Hydrometer
Lenses
Microscopes
Napier's bones
Pantograph ("Parallelogram")
Protractor
Scotoscopes
Slide rule
Spectacles
Spy-glasses
Terrella
Thermometer
Tube spectacles
Wren's perspective drawing instrument
RSS feed of Encyclopedia topics