×
Please click
here
if you are not redirected within a few seconds.
All
Images
Videos
News
Maps
Shopping
Books
Search tools
Any time
Any time
Past hour
Past 24 hours
Past week
Past month
Past year
All results
All results
Verbatim
Alidade
<
>
View all
An alidade or a turning board is a device that allows one to sight a distant object and use the line of sight to perform a task.
Wikipedia