If the travel had been "_Fire right_" 3 minutes, then by moving the scale "_Fire left_" 9 minutes, the final setting of the sight would have been "_Fire left_" 6 minutes.
Q. From the table on page 129 find the number of yards 3 points on the telescopic sight are equal to at 7000 yards range.
[Illustration: TELESCOPIC SIGHT. (Model 1898.) FIG. 69.]
[Illustration: 3-INCH RAPID-FIRE GUN-SIGHT. FIG. 70.]
2. Point or describe the location of the following parts of the telescopic sights, Model 1904:
Eye-lens cover. Gear-case cover and cover for Dial. range drum. Focusing ring. Telescope lamp-holder. Peep-sight. Sight-shank elevation-scale. Eye-end telescope clamp. Elevation-guide. Deflection worm knob. Sight-arm. Telescope tube. Yoke-shaft. Elevation rack. Bearing for yoke. Cell-end telescope clamp. Yoke. Objective shutter. Lamp-bracket for range drum Cradle. and elevation-scale. Cross sight. Elevation worm. Yoke-cap. Focusing sleeve nut. Deflection-pointer bracket. Deflection scale. Fulcrum. Elevating gear-shaft. Elevating wheel and hub. Deflection worm. Sight-bracket. Eye-lens. Plug connection for lamps. Field lens. Lamp-holder for deflection Cross-wire ring. scale. Cross wires. Range drum. Erecting prisms (Porro). Objective.
[Illustration: FIG. 71. 3-INCH TELESCOPIC SIGHT, MODEL OF 1904.]
[Illustration: FIG. 72. 3-INCH TELESCOPIC SIGHT, MODEL OF 1904.]
TABLE OF VALUES IN YARDS OF POINTS OF DEFLECTION.
------------------------------------------------- Min. | 3 | 6 | 9 | 12 | 15 ------------------------------------------------- Points. | 1 | 2 | 3 | 4 | 5 ------------------------------------------------- Range. | Value of Points in Yards. ------------------------------------------------- 1000 | 1 | 2 | 3 | 4 | 5 2000 | 2 | 4 | 6 | 8 | 10 3000 | 3 | 6 | 9 | 12 | 15 4000 | 3 | 6 | 9 | 12 | 15 5000 | 4 | 8 | 12 | 16 | 20 6000 | 5 | 10 | 15 | 20 | 25 7000 | 6 | 12 | 18 | 24 | 30 8000 | 7 | 14 | 21 | 28 | 35 9000 | 8 | 16 | 24 | 32 | 40 ------------------------------------------------- 10000 | 9 | 18 | 27 | 36 | 45 -------------------------------------------------
_Note._--This table is only _approximate_. It is true within 1 yard, which is sufficiently accurate for all firing under Case II.