ohland
07-21-2014, 01:48 PM
For those wanting to DIY:
Fabricating a Unertl type scope mount
http://rvbprecision.com/shooting/fabricating-a-unertl-type-scope-mount.html
POSA vs Unertl Mounts (Dewayne Greiner’s home page)
http://unertl.alexweb.net/new_page_2.htm
Various Target Scopes specifications and whatnot...
http://unertl.alexweb.net/index.htm
Telescope sight mounting patent - US 2004489 A
http://www.google.com/patents/US2004489?dq=patent:2004489
A Source for Scope Bases - Steve Earle
http://www.steveearleproducts.com/scopeblocks.html
FOCUSING THE RETICULE FOR CLARITY
The reticule is brought into focus by adjusting the eyepiece (ocular lens) in or out in relation to the eye. Adjustment is required only in cases of Imperfect or failing eyesight.
111423
To focus the reticule, loosen the knurled lock ring located just forward of the eyepiece (Eyepiece Lock Ring) and turn it several full turns away from the eyepiece. Now, starting from its original setting, back off the eyepiece several turns away from the lock ring. Rest the telescope and point it at the sky. DO NOT LOOK AT AN OBJECT OR TARGET Start slowly to turn the eyepiece toward the lock ring until the reticule becomes clear and distinct. When the reticule appears sharp and clear, rest your eye for several minutes and check it again. This rechecking of the reticule will assure that your eye is not accommodating itself to an incorrect setting. When the adjustment is correct, tighten the lock ring against the eye-piece. Unless your eyesight itself changes, the adjustment should always remain locked in this position.
SETTING THE EYE RELIEF ADJUSTMENT STOP
111437
After focusing the reticule, you can set the scope up for eye relief. Simply loosen the knurled screw on the right of the scope and slide the STS to the correct position. Then tighten the screw. NOTE: The scope will move FORWARD upon firing. After firing, if you don't have the return coil spring installed, simply pull back on the tube until it seats against the stop.
VERTICAL AND HORIZONTAL RETICULE ALIGNMENT
111422
Just forward of the threaded eyepiece section is a second knurled ring containing two screws (Adjustment Ring, it has the scope power stamped on it).
111428
Turning this ring will pivot the entire reticule assembly. The reticule was adjusted into perfect vertical, and horizontal, alignment before leaving the factory. The reticule can be adjusted to compensate for any “canting” of the mounting blocks. To set the reticule so that the cross wires will be perpendicular and horizontal, merely loosen the two small set screws located on opposite sides of the reticule adjusting ring which is the first knurled ring back of the rear mount. DO NOT REMOVE THESE SCREWS OR BACK THEM OUT TOO FAR. This allows the ring to be freely rotated and reticule correctly placed. After adjustment, re-tighten set screws and recheck setting.
Reticules:
Standard reticule is a .0007" cross-wire. Both .0005" or .001" cross-wires were available. A dot, called a “Lee Dot” or a “Tack Hole Dot” was available in 1/8”, ¼”, 3/8”, ½”, 5/8”, ¾”, 7/8”, or 1” sizes (1 minute equals 1” at 100 yards)
Source for Replacement Cross-Wires
Go to fleabay and search for "Fine Tungsten Wire". Folks have used fine human hair, single strands untwisted from dental floss, spider web, and other things.
Changing Reticules
Reticules may be changed by unscrewing and removing the rear lens extension but care must be exercised as the end of the reticule holder extends beyond the tube into the rear lens extension. Using a fine watch screw driver, the two screws holding the reticule can be removed and the new reticule installed. Please note that there appears to be TWO locating pins on the underside of the tube, between the adjusting ring and the rear mount.
111433
FOCUSING YOUR SCOPE FOR RANGE
The Super Targetspot is quickly and accurately focused from 50 feet to infinity by turning the graduated range adjusting sleeve located at the front of the scope to the desired range position marked on the tube. The tube is marked with setting points for various ranges from 50 feet to 200 yards or over. Never adjust the sleeve below the "50 foot mark" or above "the 200 yard or over" mark. A NEW SCOPE WAS FACTORY SET AT THE 100 YARD POSITION
Adjust Scope to Another Range
111424
To adjust for another range, loosen the adjusting sleeve cap located at the front of the scope. There may be two knurled rings, one being a grip on the objective bell, and the one in front being the actual objective lock ring. Turn the range adjusting sleeve until the zero mark on the sleeve aligns with the zero mark on the tube. From this point, you make your new adjustment.
EXAMPLE. screwing the sleeve OUT 5 complete turns from zero is the 50 foot setting. Screwing the sleeve IN 6 complete turns from ZERO is the 50 yard setting. Once your correct setting is made, LOCK THE ADJUSTING SLEEVE CAP. The objective lens is not positioned until this cop is securely locked.
TABLE OF RANGE SETTINGS*
50 feet -5 full turns
25 yards 0
50 yards +6 full turns
100 yards +8 full turns
200 yards or over +9 full turns
The table above shows standard target distances. Intermediate range setting can be obtained by making use of the 0 to 20 graduations on the adjustment sleeve. These gradations are used as reference points to accurately compute quarter and half turns, etc. of the adjustment sleeve. Please notice that there are 25 gradations!
111429
NOTE: the 10x STS does NOT need adjustment of the objective lens for anything over 50 yards in game shooting. When adjusted for mean ordinary range the slight aberration due to change to shorter or longer range is negligible except for fine target shooting.
Front and Rear 3-Point Suspension Mounts
The front 3-point suspension mount supports the weight of the scope on two definite (nylon) bearing points against which the scope is held by a top spring and plunger. The rib on the top of the tube mates with the slotted top plunger and this prevents the scope from turning.
111430
The rear 3-point suspension rear mount provides markings on the windage and elevation bases which read the same as a micrometer. When bases are placed 7.2 inches apart, one click of either adjusting knob with change the center of group 1/4 minute, or 1/4 inch of an inch at 100 yards. The rear mount has Straight Edge Bearings which insure correct horizontal and vertical adjustments for each movement of the windage and elevation knobs. The rear mount has non-rotating nylon rocker bearings which hold the tube without marring. [ed] not sure what the Straight Edge Bearings look like, on mine all I see are nylon plungers.
111431
Mounting Base Spacing Effects on Windage and Elevation
Different spacing of the bases will have an effect on the click values. The table below shows the click values for 7.2 and 6 Inch spacing.
WINDAGE AND ELEVATION VALUES
Distance between holes
Range 7.2” 6”
50 feet .039 .050
25 yards .062 .075
50 yards .125 .150
100 yards .250 .300
200 yards .500 .400
300 yards .750 .900
400 yards 1.000 1.200
500 yards 1.250 1.500
600 yards 1.500 1.800
700 yards 1.750 2.100
800 yards 2.000 2.400
900 yards 2.250 2.700
1000 yards 2.500 3.000
TARGET BASES
The front and rear mounts are hardened bases of standard dimensions. These are referred to as “Standard” or “Unertl” bases. The front mount is .890” long and the rear mount is 1.250” long.
Attach Scope to Mounting Bases
111443
Care Of Your STS
The STS is designed as to require very little attention. All optical elements are gasket sealed, outside dirt or moisture cannot enter the scope. An occasional careful wiping of outer surfaces with a soft cloth, or paper handkerchief, is all that will be necessary to keep the optics in good working order. If the outer surfaces become smeared with oil, or foreign matter, a small amount of liquid (type used on eye glasses) should be applied to a paper handkerchief and carefully wiped on the lens surfaces. If the surfaces are extremely dirty, use a camel’s hair brush to remove any grit which would scratch the optical surfaces.
It is never necessary to remove any of the optical elements to clean them. Special tools are required to remove the optical elements and a telescope should be disassembled only at the factory.
Super-Targetspot models should at all times be used with a fine film of oil, or equivalent lubrication, on the tube, and at mount bearing points. This is especially true on large caliber rifles.
POWER CHANGE
Changing the eyepiece of a Super Targetspot will not in itself affect a complete power change. To retain maximum field of view. brightness, and eye relief, Internal cells and diaphragms must be altered. 10, 12, 15 or 20X do not require an optics change. Conversions to 25 or 30 power also require an optic change.
Fabricating a Unertl type scope mount
http://rvbprecision.com/shooting/fabricating-a-unertl-type-scope-mount.html
POSA vs Unertl Mounts (Dewayne Greiner’s home page)
http://unertl.alexweb.net/new_page_2.htm
Various Target Scopes specifications and whatnot...
http://unertl.alexweb.net/index.htm
Telescope sight mounting patent - US 2004489 A
http://www.google.com/patents/US2004489?dq=patent:2004489
A Source for Scope Bases - Steve Earle
http://www.steveearleproducts.com/scopeblocks.html
FOCUSING THE RETICULE FOR CLARITY
The reticule is brought into focus by adjusting the eyepiece (ocular lens) in or out in relation to the eye. Adjustment is required only in cases of Imperfect or failing eyesight.
111423
To focus the reticule, loosen the knurled lock ring located just forward of the eyepiece (Eyepiece Lock Ring) and turn it several full turns away from the eyepiece. Now, starting from its original setting, back off the eyepiece several turns away from the lock ring. Rest the telescope and point it at the sky. DO NOT LOOK AT AN OBJECT OR TARGET Start slowly to turn the eyepiece toward the lock ring until the reticule becomes clear and distinct. When the reticule appears sharp and clear, rest your eye for several minutes and check it again. This rechecking of the reticule will assure that your eye is not accommodating itself to an incorrect setting. When the adjustment is correct, tighten the lock ring against the eye-piece. Unless your eyesight itself changes, the adjustment should always remain locked in this position.
SETTING THE EYE RELIEF ADJUSTMENT STOP
111437
After focusing the reticule, you can set the scope up for eye relief. Simply loosen the knurled screw on the right of the scope and slide the STS to the correct position. Then tighten the screw. NOTE: The scope will move FORWARD upon firing. After firing, if you don't have the return coil spring installed, simply pull back on the tube until it seats against the stop.
VERTICAL AND HORIZONTAL RETICULE ALIGNMENT
111422
Just forward of the threaded eyepiece section is a second knurled ring containing two screws (Adjustment Ring, it has the scope power stamped on it).
111428
Turning this ring will pivot the entire reticule assembly. The reticule was adjusted into perfect vertical, and horizontal, alignment before leaving the factory. The reticule can be adjusted to compensate for any “canting” of the mounting blocks. To set the reticule so that the cross wires will be perpendicular and horizontal, merely loosen the two small set screws located on opposite sides of the reticule adjusting ring which is the first knurled ring back of the rear mount. DO NOT REMOVE THESE SCREWS OR BACK THEM OUT TOO FAR. This allows the ring to be freely rotated and reticule correctly placed. After adjustment, re-tighten set screws and recheck setting.
Reticules:
Standard reticule is a .0007" cross-wire. Both .0005" or .001" cross-wires were available. A dot, called a “Lee Dot” or a “Tack Hole Dot” was available in 1/8”, ¼”, 3/8”, ½”, 5/8”, ¾”, 7/8”, or 1” sizes (1 minute equals 1” at 100 yards)
Source for Replacement Cross-Wires
Go to fleabay and search for "Fine Tungsten Wire". Folks have used fine human hair, single strands untwisted from dental floss, spider web, and other things.
Changing Reticules
Reticules may be changed by unscrewing and removing the rear lens extension but care must be exercised as the end of the reticule holder extends beyond the tube into the rear lens extension. Using a fine watch screw driver, the two screws holding the reticule can be removed and the new reticule installed. Please note that there appears to be TWO locating pins on the underside of the tube, between the adjusting ring and the rear mount.
111433
FOCUSING YOUR SCOPE FOR RANGE
The Super Targetspot is quickly and accurately focused from 50 feet to infinity by turning the graduated range adjusting sleeve located at the front of the scope to the desired range position marked on the tube. The tube is marked with setting points for various ranges from 50 feet to 200 yards or over. Never adjust the sleeve below the "50 foot mark" or above "the 200 yard or over" mark. A NEW SCOPE WAS FACTORY SET AT THE 100 YARD POSITION
Adjust Scope to Another Range
111424
To adjust for another range, loosen the adjusting sleeve cap located at the front of the scope. There may be two knurled rings, one being a grip on the objective bell, and the one in front being the actual objective lock ring. Turn the range adjusting sleeve until the zero mark on the sleeve aligns with the zero mark on the tube. From this point, you make your new adjustment.
EXAMPLE. screwing the sleeve OUT 5 complete turns from zero is the 50 foot setting. Screwing the sleeve IN 6 complete turns from ZERO is the 50 yard setting. Once your correct setting is made, LOCK THE ADJUSTING SLEEVE CAP. The objective lens is not positioned until this cop is securely locked.
TABLE OF RANGE SETTINGS*
50 feet -5 full turns
25 yards 0
50 yards +6 full turns
100 yards +8 full turns
200 yards or over +9 full turns
The table above shows standard target distances. Intermediate range setting can be obtained by making use of the 0 to 20 graduations on the adjustment sleeve. These gradations are used as reference points to accurately compute quarter and half turns, etc. of the adjustment sleeve. Please notice that there are 25 gradations!
111429
NOTE: the 10x STS does NOT need adjustment of the objective lens for anything over 50 yards in game shooting. When adjusted for mean ordinary range the slight aberration due to change to shorter or longer range is negligible except for fine target shooting.
Front and Rear 3-Point Suspension Mounts
The front 3-point suspension mount supports the weight of the scope on two definite (nylon) bearing points against which the scope is held by a top spring and plunger. The rib on the top of the tube mates with the slotted top plunger and this prevents the scope from turning.
111430
The rear 3-point suspension rear mount provides markings on the windage and elevation bases which read the same as a micrometer. When bases are placed 7.2 inches apart, one click of either adjusting knob with change the center of group 1/4 minute, or 1/4 inch of an inch at 100 yards. The rear mount has Straight Edge Bearings which insure correct horizontal and vertical adjustments for each movement of the windage and elevation knobs. The rear mount has non-rotating nylon rocker bearings which hold the tube without marring. [ed] not sure what the Straight Edge Bearings look like, on mine all I see are nylon plungers.
111431
Mounting Base Spacing Effects on Windage and Elevation
Different spacing of the bases will have an effect on the click values. The table below shows the click values for 7.2 and 6 Inch spacing.
WINDAGE AND ELEVATION VALUES
Distance between holes
Range 7.2” 6”
50 feet .039 .050
25 yards .062 .075
50 yards .125 .150
100 yards .250 .300
200 yards .500 .400
300 yards .750 .900
400 yards 1.000 1.200
500 yards 1.250 1.500
600 yards 1.500 1.800
700 yards 1.750 2.100
800 yards 2.000 2.400
900 yards 2.250 2.700
1000 yards 2.500 3.000
TARGET BASES
The front and rear mounts are hardened bases of standard dimensions. These are referred to as “Standard” or “Unertl” bases. The front mount is .890” long and the rear mount is 1.250” long.
Attach Scope to Mounting Bases
111443
Care Of Your STS
The STS is designed as to require very little attention. All optical elements are gasket sealed, outside dirt or moisture cannot enter the scope. An occasional careful wiping of outer surfaces with a soft cloth, or paper handkerchief, is all that will be necessary to keep the optics in good working order. If the outer surfaces become smeared with oil, or foreign matter, a small amount of liquid (type used on eye glasses) should be applied to a paper handkerchief and carefully wiped on the lens surfaces. If the surfaces are extremely dirty, use a camel’s hair brush to remove any grit which would scratch the optical surfaces.
It is never necessary to remove any of the optical elements to clean them. Special tools are required to remove the optical elements and a telescope should be disassembled only at the factory.
Super-Targetspot models should at all times be used with a fine film of oil, or equivalent lubrication, on the tube, and at mount bearing points. This is especially true on large caliber rifles.
POWER CHANGE
Changing the eyepiece of a Super Targetspot will not in itself affect a complete power change. To retain maximum field of view. brightness, and eye relief, Internal cells and diaphragms must be altered. 10, 12, 15 or 20X do not require an optics change. Conversions to 25 or 30 power also require an optic change.