Difference between revisions of "Tall's Helm Indicator"
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Revision as of 10:10, 16 July 2015
Tall's Helm Indicator, c. 1886[1]
Tall's Helm Indicator was an electrical shipboard transmitter/receiver pair which provided a visual indication of the tiller position.
It, and a companion Tall's Engine Room Telegraph were derived from a distance indicator first seen in 1885.[2]
It was being evaluated alongside other electrical designs in 1886.[3]
Design and Evaluation
Tall's Helm Indicator was evaluated in 1886 alongside his almost identical engine room telegraph and similar instruments from Lieutenant Lloyd, a Mr. Gisborne, Messieurs Lane and Farquharson, those of Inflexible and Colossus patterns.
See Also
Footnotes
- ↑ Annual Report of the Torpedo School, 1886. Plate 22.
- ↑ Annual Report of the Torpedo School, 1885. p. 75.
- ↑ Annual Report of the Torpedo School, 1886. p. 87.
Bibliography
- H.M.S. Vernon. Annual Report of the Torpedo School, 1886. Copy 92 at The National Archives. ADM 189/6.
