DIY History | Transcribe | Scholarship at Iowa | Theory of the astronomical transit instrument applied to the portable transit instrument Wuerdemann no.26: a compilation from various authorities, with original observations by Harry Edward Burton, 1903 | Theory of the astronomical transit instrument applied to the portable transit instrument Wuerdemann no. 26: a compilation from various authorities, with original observations by Harry Edward Burton, 1903, Page 32

Theory of the astronomical transit instrument applied to the portable transit instrument Wuerdemann no. 26: a compilation from various authorities, with original observations by Harry Edward Burton, 1903, Page 32

the east end. Then [?] W- [?]E= 2w-2c and [?]W-[?]E/4 = w-c/2,the inclination is given by a perfectly adjusted level. Thus, taking the sum of the west readings minus the sum of the east readings and dividing by the number of readings given the inclination of the axis in divisional of level. Multiplying the number of divisions by the value of a division in angular units given the inclination in angular units. If the result is positive the west end is too high, and if negative, the east end is too high.
It is seen from what precedes that reversing the level gives the inclination of the axis, independent of the [?] c. We call the first position of the level "direct" and the second "reverse"
Ex. Let the readings of the level direct be 15 east and 13 west, and the readings of the level in the reverse position be 14.5 east and 13.5 west.
Then we have [?]E=29.5 and [?]W= 26.5
the inclination of the axis = 3/4 division in favor of the east end.
The length of the bubble is w+e, and

the east end. Then [?] W- [?]E= 2w-2c and [?]W-[?]E/4 = w-c/2,the inclination is given by a perfectly adjusted level. Thus, taking the sum of the west readings minus the sum of the east readings and dividing by the number of readings given the inclination of the axis in divisional of level. Multiplying the number of divisions by the value of a division in angular units given the inclination in angular units. If the result is positive the west end is too high, and if negative, the east end is too high.
It is seen from what precedes that reversing the level gives the inclination of the axis, independent of the [?] c. We call the first position of the level "direct" and the second "reverse"
Ex. Let the readings of the level direct be 15 east and 13 west, and the readings of the level in the reverse position be 14.5 east and 13.5 west.
Then we have [?]E=29.5 and [?]W= 26.5
the inclination of the axis = 3/4 division in favor of the east end.
The length of the bubble is w+e, and