Linear-angular intervals method of determining a exemplar basis for category 2 for verification of electronic total stations is proposed in the article. Experimental measurements on exemplary second level the basis were carried out by proposed method. The accuracy of segments, determined by the proposed method, obtained by comparison with direct measurements performed using 0.001 mm precision control meter. During the measurements of the control meter centers of marks were determined within 0.01mm with a special device to force alignment, and to improve the accuracy of the scale the photographic method of fixation of samples was used. Differences of meter intervals of measured reference of basis by control meter in forward and reverse directions, taking into account the temperature range, did not exceed 0.02 mm. Experimental measurements were performed by electronic total station LEICA TCA 2003 and special device created by authors for linear – angular measurements. The device allows you to center a special mark for angular measurements with glued reflective films to measure the distances of the center mark with an accuracy of 0.02 mm. Prior to the measurements preliminary calculations were performed to determined the accuracy and total station instrument adjustments for each brand reflecting each device (using three devices).The proposed method of determining the length of the interval a basis is important distance from the total station to the endpoints of the interval. According to derived formulas we calculated the distance from electronic total station to the appropriate length of the desired interval with a given precision measurements of distances and angles of corresponding total station. In addition we have derived formulas that allowed us to find the allowable difference of shoulders that minimally affect the accuracy of the determining of the total station to the beginning and end of the interval. The total station was installed on calculated distance to the desired interval basis with length of shoulders of permissible differences and measured the centers on marks on special devices created by us.The results confirmed our previously performed calculations. The differences between the segments of the proposed method and measured lengths measured by control meter for meter interval not exceeding 0.14 mm, and ten meter intervals - 0.33 mm and meet the instructional materials. Systematic errors in differences were not found.
1. Bazisy jetalonnye. Metodika poverki. MI BGEI 40-03. [Bases of reference. Methods of verification]. Moscow, 2003, Available at: www.opengost.ru.
2. Begunov B. I., Zakaznov N., Kirjushin S., Kuzichev V. Teorija opticheskih sistem [Theory of optical systems]. Moscow: Mechanical Engineering, 1981, 432 p.
3. Vashhenko V., Perij S., Smirnov Je. Pro stvorennja linijnogo bazysu. Visnyk L'vivs'kogo nacional'nogo agrarnogo universytetu [On the basis of the establishment linear].[Visnyk of Lviv National Agrarian University]. issue.13, 2012,pp. 240–246.
4. Koshelev A. Ob attestacii sovremennyh svetodal'nomerov na jetalonnyh linejnyh bazisah [On certification of modern EDM on whether the reference-linear bases].
5. Lityns'kyj V. O., Fys M., Pokotylo I., Lityns'kyj S. Rozrahunok optymal'nyh znachen' vymirjuvanyh viddalej dlja tochnogo vyznachennja dovzhyn ne-velykyh vidrizkiv [Calculation of optimal values for distances measured to determine the exact length of at-large segments]. Geodezija, kartografija i aerofotoznimannja. 2014,issue 76, pp. 10–16.
6. Lityns'kyj V. O., Kolgunov V., Muha V., Garasymchuk I. Vykorystannja Berezhans'kogo linijnogo bazysu dlja doslidzhennja svitloviddalemiriv [Using of Berezhansky line basis for research rangefinder light] Suchasni dosjagnennja geodezychnoi' nauky ta vyrobnyctva. 2003, pp. 175–177.
7. Lityns'kyj V. O., Kolgunov V., Muha V., Vashhenko V. Pro stvorennja Berezhans'kogo linijnogo bazysa [On creating a linear basis Berezhansky] Geodezija, kartografija i aerofotoznimannja. 2003, issue 64, pp. 33–36.
8. Lityns'kyj V. O., Vivat A., Rij I. Prystrij dlja linijnyh vymirjuvan' geodezychnyh vzircevyh bazysiv 2-go rozrjadu [The device for linear measurements of geodetic bases of exemplary the 2nd grade] Naukovyj visnyk Uzhgorods'kogo universytetu. [Scientific Bulletin of the Uzhgorod University]. issue 3, 2014, pp. 19–22.
9. Obrazcovye linejnye bazisy. Obshhie tehnicheskie trebovanija. Metrolo-gicheskoe obespechenieju [Exemplary linear basis. General technical requirements. Metrological provision]. MI BGEI 09-90 Technique Institute.
10. Perij S. S., Moroz O. I., Pokotylo I. Ja., Garasymchuk I. F., Tartachyns'ka Z. R., Tarnavs'kyj V. L. Vyznachennja intervaliv etalonnogo Berezhans'kogo bazysa metodom fotofiksacii' [Determination of reference intervals Berezhansky basis by photofixation] Naukovyj visnyk Uzhgorods'kogo universytetu [Scientific Bulletin of the Uzhgorod University]. issue 3, 2014, pp. 93–95.
11. Svetodal'nomery. Metody i sredstva poverki [Optical distance meters. Methods and means of verification]. MI BGEI, 15-03, Мoscow,2003,Available at: www.opengost.ru.
12. Trevogo I. S., Savchuk S., Denysov O., Volchko P. Novyj vzircevyj geodezychnyj bazys [New exemplary geodesic base ] Visnyk geodezii' ta kartografii' [Bulletin of Surveying and cartography]. 2004, no. 1(32), pp. 13–16.
13. Trevogo I. S., Tsyupak I. Osoblyvosti metrologichnoi' atestacii' etalonnyh geodezychnyh bazysiv [Features of metrological certification standard of geodetic bases]Suchasni dosjagnennja geodezychnoi' nauky ta vyrobnyctva [Modern achievements of geodetic science and industry]. 2014, issue 1, рр. 29–33.
14. Ustavich G. K. Voprosu o sozdanii bazisov dlja attestacii sputnikovoj appa-ratury i svetodal'nomerov [On the question of the establishment of the bases for certification of satellite instruments and light range finders]Geodezija i kartografija. [Geodesy and Cartography]. 1999, no. 9, рр. 7–14.
15. K. Harding, "Application issues when using optical 3D systems in place of CMMs," in Machine Vision and Three-Dimensional Imaging Systems for Inspection and Metrology II, K. Harding, Ed., Proc. SPIE 4567, 2002, 1–10.
16. B. Gallagher, Optical Shop Applications for Laser Tracker Metrology Systems, (M.S. Thesis, College of Optical Sciences, University of Arizona, 2003).
17. A. Buga, Analysis of edm instruments calibration at the kyvišk_s Calibration baseline, Vilnius, Lithuania. The 8th International Conference. 2011, pp. 1301–1305