C. F. CASELLA & CO. LTD. TRANSIT THEODOLITES-Continued. … No. 17. (17) 4-inch Transit Theodolite, best construction, with vor tical and horizontal circles, divided on silver to i minute, fitted with Reeves's patent tangent micro meters to both circles, best achromatic telescope, stride level, bubble on vernier arm divided to 10 seconds, trough compass…
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