Figures Page 



9. Power lonit for Fresh-Water Staff Gage 18 



10. Progranuner for Wave Gages 19 



11. Signal Input Cable for Strip-Chart Recorder 19 



12. Holder for Sectional Step-Resistance Gage Sections .... 23 



13. Pile Clamp for Wave Gage 24 



14. Diagram of Fresh-Water Staff Gage 25 



15. Wiring Diagram for Fresh-Water Gage Section 26 



16. Functional Block Diagram of Parallel-Type, Step-Resistance 



Gage for Salt Water 29 



17. Functional Diagram for Parallel Resistor Gage 30 



18. Parallel -type, Step-Resistance Gage for Use in Salt Water . 35 



19. Transformer Unit for Salt -Water Gage 36 



20. Wiring Diagram of Transformer Unit of Parallel Step- 



Resistance Gage 37 



21. Panel Assembly for Parallel-Resistance Gage 38 



22. Wiring Diagram for Power Supply and Programmer of Parallel 



Step-Resistance Gage 39 



23. Connecting Diagram for Parallel Step-Resistance Gage Section 41 



24. Hookup Diagram for Parallel-type Step-Resistance Gage ... 42 



25. Simplified Diagram of Relay-type, Step-Resistance Gage . . 46 



26. Modified Circuit for Relay-type, Step-Resistance Gage ... 46 



27. Simplified Diagram for Relay Gage 48 



28. Relay-Operated Step-Resistance Wave Gage for use in 



Fresh or Salt Water 49 



29. Relay-panel Layout for Relay-type Gage 50 



30. Front Panel and Chassis Drilling for Relay-type Gage ... 51 



31. Relay Panel - A, B, C, D, E 52 



V 



