I have a Pine Ridge scope with moisture inside. Is there any way I can take it apart to clean it, or will I have to buy another one.

1 inch dovetail mounts medium height if your marlin 60 has 11 mm dovetail rails . if not will need to get receiver drilled for rail mounting and mounts of your choice better to get a competent gunsmith to do it

that is true, I sent one back to bushnell they fixed it contact the company

The third turret is for parallax and approximate range
And the lines on the reticule are round and velocity specific plus magnification comes into the distances between substension
On my scope 100 yard zero the next substension down is 176 yards at 10 magnification
The best way to use the reticule for ranging is to get a ballistics program and enter rifle round and scope stats and get a chart for that round and reticule
And the drop chart will change for different velocities and ballistic coefficients of rounds and temperatures a summer chart will be different to a winter chart due to denser air in the cold

Either is OK for that scope

You will need a good size clear plastic bag or a zip lock baggy or both, the zip lock needs to be large enough to put the scope in so you can close it up but still work on the scope. This will all make sense in a bit. You will need a good hair drier, and bit of vaseline. If you can get your hands on a tank of paint ball gun propellant (gas) all the better. Now heat the scope tube till warm then remove the eye piece you look through. heat this eye piece until you think all moisture is gone. Clean it as best as you can. Now put the scope and the eye piece in the bag, add a little vaseline to the threads be careful not to get any on the inside glass just on the threads. Put some of the gas in the bag to balloon it out and seal it up, but leave room so you can put the eye piece back on the scope tube. The gas should stay inside the scope tube and keep any moisture out. You are drying out and re-pressuring the scope. This will work even with out any gas but may only last 1-2 years or could last the rest of your life. Good Hunting.

If you have 2 knobs, there should be no left knob. If you have a knob on the left, you have it mounted 90 degrees out of alignment. Loosen the rings and turn it 90 degrees clockwise. Once you do that, the knob on the top is the one you will use for elevation.

If you have 3 knobs, the left one is for parallax adjustment, focuses the scope for specific ranges. the top knob is the elevation adjustment in this case also.

A quick and easy way to bore sight your rifle, if it is bolt action only, or an AR, mount the rifle in a cardboard box with cutouts so it will sit without tipping, remove the bolt and sight down the bore at a target 100 yards away, a mail box, or the corner of a building, make sure the rifle doesn't move, then peek through the scope, it should be seeing the same target your bore is seeing, if not, adjust your scope to it, if it won't travel that far, shim the front with pieces of 35 mm film. then check it again, if you can get it to stay there, it will put your bullet on paper at 100 yards.

You can't see the cross hairs or the whole picture is blurry? I know that the rear ring on the scope will bring the cross hairs into focus, glasses or not, and the scope itself should be clear all the way down, I can't see a thing either without glasses and it has really hampered my shooting. It ain't no fun , it's frustrating. Try turning the rear eyepiece, see what happens, hope this helps.

take it into a camera shop, they will have the tool,, but if you undo the scope it will need to be regased again the "o"ring seals have worn out or broken and thats how water got into it,, it also let the nitrogen out of it,,,if its a cheepy scope buy a new one,,,
what i mean by a cheepy is less than £1000,,,,

check your air tank for moisture , drain it and put a oiler on it, or just oil it your self. put at least 3 to 4 drops run the proper amount of air they want you to run.