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Operation Manual
NC 3-12x50
DAYTIME RIFLE SCOPE
105 Sparks Ave., Toronto, ON M2H 2S5, Canada
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IMPORTANT INFORMATION Read prior to activation. NC 3-12x50 is the sophisticated optical riflescope. To operate it properly, please read this manual carefully. Ignoring operation procedures described in this manual will void your warranty. NEVER disassemble the unit. NEVER reverse the polarity of a battery. NEVER connect the unit to external power sources. ALWAYS remove battery when the unit not in use for a long period. ALWAYS keep the objective lenses covered when not in
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Precautions NC 3-12x50 is the sophisticated precise optical instrument equipped with electronics. It should be handled with due care: Unit contains fragile components. Avoid impacts, dust, moisture and sharp changes of temperature. Do not touch the optical surfaces other than for cleaning. Doing so may damage the anti- reflection coating. Clean optical surfaces with professional lens cleaning supplies. Use only a soft clean cloth to clean the exterior of the riflescope. St
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TABLE OF CONTENTS DEVICE APPEARANCE........................................6 1. BRIEF DESCRIPTION.......................................8 2. DELIVERY SET.................................................9 3. TECHNICAL SPECIFICATIONS....................10 4. TYPE AND SIZE OF THE RETICLE..............11 5. INSTALLATION ON THE WEAPON ............20 6. BATTERY INSTALLATION ..........................21 7. RETICLE ILLUMINATION ............................21 8. USING THE NC 3-12x50 RIFLESC
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DEVICE APPEARANCE Figure 1 For numbering see the next page. The manufacturer reserves the right to implement design and specification improvements from time to time without notice. 6
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Figure. 1 1 - Body of the riflescope 2 - Objective lens 3 - Eyepiece 4 - Battery compartment 5 - Internal windage/elevation adjustment knobs 6 - Reticle brightness adjustment switch 7 - Parallax adjustment knob 8 - Magnification adjustment ring 9 - Objective lens cover 10 - Zeroing setscrew 11 - Fixation screws of the elevation adjustment 12 - Fixation of the windage adjustment 13 - Optional Hood 14 - Eyepiece cover 7
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1. BRIEF DESCRIPTION NC 3-12x50 is the daytime riflescope with variable magnification, which is designed for being used on various kinds of weapons. The Mil-dot reticle of the riflescope is positioned in the focal plane of the eyepiece (second focal plane), thus providing permanent size of the reticle regardless of the riflescope variable magnification. This creates favorable conditions for acquisition of small targets at long distances, due to the fact that the reticle covers only s
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2. DELIVERY SET Standard delivery set of NC 3-12 х50 includes: - Device - 1 pc. - Objective lens cover - 1 pc. - Eyepiece cover - 1 pc. - Cleaning cloth - 1 pc. - Allen key for setting zero - 1 pc. - Battery CR2032 - 1 pc. - Manual - 1 pc. Optional accessories: - Hood - 1 pc. - Rings for installation on a weapon - 2 pc. - Hard transportation case - 1 pc. 9
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3. TECHNICAL SPECIFICATIONS Magnification, х 3 to 12 Objective lens diameter, mm 50 Field of view, º 6.8 to 1.7 (from 11.9m to 3m @100m) Exit pupil, mm 12.5 to 4.1 Diopter adjustment +3, -3 Eye relief distance, mm 100 Reticle battery, V CR 2032 (3 V) Battery life, h 15 to 100 Adjustment mechanism, step 10mm @100m Elevation range ±1.7m @100m Maximum windage range ± 0.6m @100m Working windage range ±0.27m @100m о Operational temperature, С -50° … +50° Relative humidity, % Up t
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4. TYPE AND SIZE OF THE RETICLE Reticle description. The riflescope incorporates black illuminated reticle as shown on the Fig. 2. Figure 2 11
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The central part of the reticle represents Mil-Dot grid with added additional vertical and horizontal markings in made with variable step. Such pattern corresponds to the TMR grid. The grid has breakdown for a finer step (of 0.2 thousands of a distance) on the edges. This is necessary for exact estimation of shooting distance for ranges from 500 to 1000 meters and above. The additional markings allow distance measuring more precisely and, consequently, improve accuracy of shooting comp
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Method 1. Reticle segments are described in angular units as thousands of a distance or mils (1 mil). Note 1 mil represents the angular measure of a distance and constitutes: 1 mil = 1 t.d. (one thousands of a distance), or = 10 sm at 100 m of a distance, or = 3.438*MOA (Minute of Angle). The segment E on the Fig.2 = 1 mil (=1 t.d.) is the distance between large dots. The size of the segments of the reticle in the Table. 2 are given in mils. TABL
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TABLE 3 A B C D E F G H Size in cm 100 7.5 0.5 4.0 10 1.5 5 2 @100m distance The segments of the reticle for other magnification settings are given in the Table 4 (all numbers are measured in cm @100m). TABLE 4 Magnification, x A B C D E 3 400 28.0 2.0 10.0 40.0 4 300 21.0 1.5 7.50 30.0 6 200 14.0 1.00 5.00 20.0 150 10.5 0.75 3.8 15.0 8 10 120 8.4 0.60 3.0 12.0 12 100 7.0 0.50 2.5 10.0 It’s possible to determine segments size for any magnification with the form
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Example: Let's find size of the segment (E) of the thin cross hair at 100 m distance with 8 x magnification. The specified step at 100 m distance and 12x magnification is10cm. Now we shall calculate its size at 8x magnification: E = (10 х 12): 8 = 15 cm at 100 m. The distance to the target also influences the corresponding sizes of the reticle. Size of the segment = (calculated size of reticle @100m) х K, where K- adjustment for particular distance and equals to: = 0.5 – f
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Determining distance to the target (for 12 х magnification only). By using the Mil-dot reticle and knowing the size of the target, it is possible to determine distance to the target with enough accuracy that is required to acquire the target (or make windage adjustment to compensate the bullet drop). Procedures: 1) Make sure that the riflescope is set to 12 х magnification; 2) Estimate real horizontal (or vertical) size of the target, to which you will be determining distance; 3)
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L= (H х 1000) / h, where L – distance to the target, m; H – real length (or height) of the target, m; h – number of the segments of the reticle that cover the chosen dimension of the target. Figure 3 (see also TABLE 6) The Figure 3 shows an example of distance estimation to a boar, which is 1.5 meters in length. Also, it is possible to determine distances to targets with size of the target being from 30 cm to 2
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TABLE 5 Distance to the target, m Real length (or height) of the target, cm Number 30 40 50 60 70 80 90 of segments (in mils or t.d.) 1.00 300 400 500 600 700 800 900 1.25 240 320 400 480 560 640 720 1.50 200 267 333 400 467 533 600 1.75 171 229 286 343 400 457 514 2.0 150 200 250 300 350 400 450 2.5 120 160 200 240 280 320 360 3.0 100 133 167 200 233 267 300 3.5 86 114 143 171 200 229 257 4.0 75 100 125 150 175 200 225 4.5 67 89 111 133 156 178 200 5.0 60 80 100 120 140 160
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TABLE 6 Distance to the target, m Real length (or height) of the target, m Number 1.00 1.25 1.50 1.75 2.00 of segments (in mils or t.d.) 2.0 500 625 750 875 1000 2.5 400 500 600 700 800 3.0 333 417 500 (*) 583 667 3.5 286 357 429 500 571 4.0 250 313 375 438 500 4.5 222 278 333 389 444 5.0 200 250 300 350 400 5.5 182 227 273 318 364 6.0 167 208 250 292 333 6.5 154 192 231 269 308 7.0 143 179 214 250 286 7.5 133 167 200 (*) 233 267 8.0 125 156 188 219 250 8.5 118 147 176 206
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5. INSTALLATION ON THE WEAPON Installation of the NC 3-12x50 on the weapon includes mounting and gluing of the fixation rings (Ø30mm) in accordance with the installation manual of the ring manufacturer. The Ø30mm fixation rings must be firmly attached to the riflescope body with a two-componential epoxy glue. WARNING: Do not over tighten fixation rings. Over tightening can lead to deformation of the riflescope, and this will prevent parallax adjustment mechanism to work correctly
