Figures Page 



32. Power Supply for Relay Staff Gage 53 



33. Cabinet Assembly for Relay-type, Step-Resistance Gage . . 54 



34. Block Diagram for Relay Staff Gage 60 



35. Parts and Assembly Drawing of Pressure-Sensitive Gage . . 65 



36. Washers for Blocking Bellows of Pressure Gage 68 



37. Power Supply Unit for Amplifier of Pressure-Sensitive Gage 70 



38. Amplifier Power-Supply Unit for Pressure Gage 71 



39. Concrete Block for Mounting Pressure-Sensitive Gage ... 72 



40. Diagram for Pressure-Sensitive Gage 76 



41. Patterns, Container, and Molds for Epoxy Sections for 



Step-Resistance Gages 80 



42. Parts for Magnetic Tape Recorder, LW 1 88 



43. Magnetic Tape Recorder Panel Layout, Model LW-1 89 



44. Chassis Layout for Model LW-1 Magnetic Tape Recorder . . 90 



45. Chassis Layout for Model LW-1 Magnetic Tape Recorder . . 91 



46. Schematic Diagram for Magnetic Tape Recorder, Model LW-1 92 



47. Calibration Signal Timer for Magnetic Tape Recorder ... 94 



48. Diagram of Calibration Unit 95 



49. Magnetic Tape Recorder, Model LW-1 



50. Block Diagram of Calibration Hookup 



51. Wave Records with Chart Speed of 2.5 mm per second 



52. Wave Records with Chart Speed of 1.25 mm per second 



53. Wave Records with Chart Speed of 1.0 mm per second 



97 



99 



102 



103 



104 



54. Gear Modification of Brush Recorder Chart Drive to 



furnish chart speeds of 2.5, 12.5, 62.5 mm per second . 105 



