CST/berger 17-645 5X Magnifying Abney Hand Level with Stadia
CST/Berger 17-645 Abney Level 5-power magnification with 1:100 stadia, is 7-3/4-Inch long, with the draw tube extending to 8-5/8-Inch in length. It also has a two-inch radius arc graduated to Degree, 0 to 90 in both directions; vernier reading to 10 minutes.