Examples from the Web for heliometer
To sum up briefly the history of the development of the heliometer.
In 1824 the great Knigsberg heliometer was commenced, and it was completed in 1829.
These two traditional methods were supplemented in 1874 by the camera and the heliometer.A Popular History of Astronomy During the Nineteenth Century|Agnes M. (Agnes Mary) Clerke
He also invented a heliometer, afterwards perfected by Fraunhofer.
The instrument he is to use should be that marvellous piece of mechanical and optical skill known as the heliometer.The Story of the Heavens|Robert Stawell Ball