Gurley Civil Engineers' and Surveyors' Instruments 1896 (1896)
W. and L. E. Gurley · leaf 3
4 W. & L. B. GURLEY, TROY, N. y. … Engineers’ Transit, 5inch needle. Price, $150.00. ENGINEERS’ TRANSITS. The cut represents our latest greatly improved Engineers’ Transit, so generally preferred in railroad practice. It has the two opposite verniers of the limb at an angle of 30° with the telescope and thus in front of the…
