PT - JOURNAL ARTICLE AU - J. M. Schaeberle TI - Method for determining the collimation constant of a transit circle AID - 10.2475/ajs.s3-25.146.144 DP - 1883 Feb 01 TA - American Journal of Science PG - 144--145 VI - s3-25 IP - 146 4099 - http://www.ajsonline.org/content/s3-25/146/144.short 4100 - http://www.ajsonline.org/content/s3-25/146/144.full SO - Am J Sci1883 Feb 01; s3-25