Letter to Messrs. W. & L.E. Gurley, 1893/04/07
Tyrrell, Joseph Burr, 1858-1957
p. 318 ; 33 x 22 cm
7 April 1893
Item is a letter written by Joseph Tyrrell to the Messrs. W. and L.E. Gurley, Troy, New York, regarding adjustments and instructions in connection with a pocket solar compass ordered for him by Dr. Selwyn. He asks that they adjust the compass to take into account the northerly latitudes of his expedition, 59 and 66, and his proximity to the magnetic pole.
Title based on contents of item.
Item contained in 'Letter Book 1891-1894' which forms part of the series entitled 'Correspondence (Chronological Files)'.
"Ms. Coll. 26, box 20, item 1"
W. & L. E. Gurley
Magnetic declinationCompasses (Mathematical instruments)