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Show A37. Anemometer Mast. TV antenna tower manufactured by Rohn Mfg. Co., Peoria, Illinois, distributed through electronic wholesale houses in principal cities. Normal anemometer installation ( 30 feet high) will use three 10- foot tower ( extension) sections No. 25 G, two guying assemblies No. GA25G, accessory platform to fit on top of a normal section, two special weather instrument attachments, about 300 feet of 3/ 16 extra high strength guy cable, six turn buckles " eye and jaw type", 48 cable clamps, 24 wire rope thimbles, and four 1/ 2- inch bolts 8 inches long, eight hex nuts, and eight washers for 1/ 2- inch bolts. Order 40 pound- per- square- foot tower configuration. Various base plates are available, but a hinged base plate is recommended. Consult local distributor for details and current prices. ( Complete tower will be between $ 150-$ 175.) A38. Wind Screen for Precipitation Gage ( B14). Improved Alter-type, USWB Spec No. 450.2151/ A, Rev. 6/ 1/ 57- ( S. A. 505- 1) $ 104.00. A39. Low- Ripple Battery Eliminator and Charger, Eico Model 1060W ($ 87.62), or low- voltage DC source of similar capacity. Consult local electronic suppliers. A40. Recording Precipitation Gage. Heated tipping bucket type with remote event recorder. ( See B15a and B15b.) 57 |
