Dartmouth Engineering:
A Wye level used by Thayer students in the 19th century.
Dartmouth Engineering:
This Halden Calculex, a 3-inch circular slide rule, belonged to Thayer Founding Dean Robert Fletcher.
Dartmouth Engineering:
Thayer students used sextants to measure angles between fixed locations.
Dartmouth Engineering:
Thacher’s Calculating Machine, a cylindrical slide rule, was used by Thayer students during the 19th and early 20th centuries.
Dartmouth Engineering:
The optical square was used by students for sighting along two lines at right angles.
Dartmouth Engineering:
The transit, which measure horizontal and vertical angles, was integral to surveying.
Dartmouth Engineering:
The dip circle, which measures slope with respect to gravity, was used in surveying and mining.