Okporo ụzọ kpakpando
Njegharị kpakpando bụ ngafe kpakpando gafere n'ọhụhụ nke ihe nlegharị anya teliskop.
Nleba anya nke ọma nke njem kpakpando bụ ntọala nke ọtụtụ ụzọ na mbara igwe na geodesy. Enwere ike ime nha n'ụzọ dị iche iche:
- anya (ọtụtụ n'ime ruo 1990): izi ezi 0,1 "ruo 2" (dabere na ngwá ọrụ); oge na elekere dijitalụ ihe dịka 0,05-0,2 sekọnd
Hụkwa
dezie- e
- Transit instrument
Akwụkwọ
dezie- Karl Ramsayer, 1969: Geodätische Astronomie, Vol.2a of Handbuch der Vermessungskunde, 900 p., J.B.Metzler-Verlag Stuttgart.
- Ivan I. Mueller, 1969: Spherical and Practical Astronomy as applied to Geodesy, 610 p., Fred.Ungar publ., USA
- IAU Coll.48: Modern Astrometry, Egermann, University Vienna.