Operator’s Maintenance Manual STEINER BINOCULARS Military ruggedness and precision 07/03
Wa r n i n g ! When using the binocular, never point it directly at the sun. The heat generated by the focused rays of the sun may cause serious damage to your eyes and to the optical elements of the binocular.
Description & Special Features STEINER binoculars provide long eye relief for eyeglass or gasmask users. By folding the rubber eyecups (1) down and over the eyepiece you will increase the eye relief of the binocular. NORMAL FOLD DOWN The binoculars are lightweight, compact instruments intended for use in general field observation and fire direction. Where applicable, the right side of the binocular includes a reticle graduated in mils.
Description & Special Features (cont’d) 1. Rubber Eyecups 2. Housing, left 3. Housing, right 4. Objective Caps Each telescope is comprised of eyecups (1), a housing assembly (2 or 3) and objective covers (4). The binoculars are optically prealigned at the factory and must not be disassembled. The friction necessary to maintain the proper interpupillary distance (distance between the eyes) is created by rubber O-rings installed in the grooves of the index pin. 4 5. Interpupillary Scale 6.
Handling Precautions DO’S DON’T S Handle the binocular with care. Dropping or jarring the binocular can damage or misalign the optics. Use the neckstrap to protect against accidental dropping of the binocular. Keep the binocular as clean and dry as possible and always store in clean, dry place when not actually in use. Follow the instructions outlined in this manual to obtain the best possible usage and service from the binocular. Do not use a dry cloth to clean the glass surfaces of the binocular.
How to Remove / Install Carrying Strap Loosen loops from neck strap (1) Slide strap out of binocular holding loops (2) Slide strap out of eyepiece cover holding loops (3) Install one end of carrying strap through eyepiece cover holding loop (3) Slide end of carrying strap (1) through holding loop (2) on bottom of binocular and fix the loop of the carrying strap. Repeat procedure for other end of carrying strap.
Operating Adjustments WARNING! When using binocular, never point it directly at the sun. Adjusting and Using Your Binocular Adjusting the binocular begins by setting the interpupillary distance. This is the distance between the pupils of your eyes. The binocular tubes pivot on a hinge, moving the tubes closer or further apart. Pivot the binocular tubes until you see a single image when looking through the binocular. How to Focus • Choose an image, sign or a tree approx. 50 m away to view.
Normal Operation (1) Place carrying strap around your neck. (2) Remove eyepiece cover by first rotating binocular telescopes inward and then lifting off eye lens cover. (3) Unsnap objective caps from front of binocular and let them hang down from binocular. (4) Close the telescopes of the binocular until the interpupillary index scale is at the proper setting for use. (5) Rotate the eyepiece adapter rings to obtain the proper diopter settings on the diopter scale.
Cleaning Instructions BINOCULAR EXTERIOR Clean the exterior of the binoculars (but not the lenses) with a lint-free cloth. Remove grease spots, fingerprints and other soil with soap and water and a well wrung-out cloth; then dry with a clean, lint-free cloth. Remove dirt and lint from objective and eye lens cover interior surfaces with a blower. OPTICAL SURFACES Blow as much dust and dirt as possible from the exposed lens surfaces.
Extreme Cold / Extreme Heat EXTREME COLD (1) Avoid breathing directly on the optical elements of the binocular. The breath may condense and freeze. (2) Do not expose the binocular to sudden and extreme temperature changes, such as carrying it directly from a well-heated area into sub-zero temperatures. Extreme temperature changes may cause the optical elements to crack. EXTREME HEAT (1) Do not allow the binocular to lie unprotected from the direct rays of the sun.
Other Extreme Conditions SAND AND DUST (1) Always keep the binocular objective and eye lens covers on when not actually in use. Sand and dust will etch glass surfaces and can penetrate through the smallest openings, thereby causing damage to adjusting mechanisms. (2) Upon completion of operations, remove all particles of sand and dust from optical elements as per “Cleaning Instructions“ before installing protective objective and eye lens covers.
Use of Reticle (where applicable) One of the telescopes of the binocular includes a horizontal and vertical scale reticle graduated in 10-mil increment unit markings (1 unit – 10 mils, 2 units – 20 mils, etc.). The format of the reticle might differ from the one shown here, but it works the same way. 30 MILS 40 MILS Fire corrections can be made by viewing the impact area and determining angular corrections by use of the left or right horizontal reticle scale.
Use of Reticle (cont’d) In determining range, if an object fills one 10 mil unit marking on the horizontal reticle scale and is known to be 10 meters wide, the object is 1000 meters away. If the same size object fills two unit markings (20 mils), it would be 500 meters away. When this formula is used, the distance will be given in the same units of measurement (feet, meters, etc.) as is used in estimating the known size of the object.
Use of Compass How to use the Analog Compass 70 60 50 40 30 20 10 0 0 10 20 30 40 50 60 70 80 350 360 (where applicable) 010 Read the bearing to which you are pointing the binocular. Line up the object to which you would like to get the bearing ON/Memory Bar on the vertical scale and read the bearing beneath. For analog compass models the bearing is illuminated by daylight and can be illuminated by a touch of the button on the side of the compass at night (7x50 models).
Use of Compass (cont’d) How to use the Digital Compass (cont’d) Setting the Declination: The compass has to be switched off with no reading in the display. Press and hold the bearing bar, at the same time, press the ON button. Then release both at once. The reading 'd 00' is shown in the display (if there is a positive or negative number in this location, it may mean that the setting has already been tested or established).
Replacable Parts 2 3 4 No.
