I dont see those numbers in my eyepieces . I see SR 4mm, F12.5 mm And H 25 mm. how do I know the diameters?
1778962
Just measure the outside diameter (OD) of the bottom of the eyepiece barrel. Less than 1" it has a 0.965" (24.5 mm) OD; otherwise, it is an 1.25" (31.75 mm) eyepiece.
1578324
I believe they are the 29-32mm. I've used some others that have been identified as 32mm, and these were just about the same size.
1470601
There's an insert for 1.25" which can be removed for 2" eyepieces. Also, the telescope only comes with a couple of 1.25"...or at least that was the case when I purchased.
859748
Look at your lens (or Google it) to see the thread count. It should say something like 5.8 or 58 which is 58 mm. Some have 37, some have something different. If you need to use an adapter, you're buying the wrong size (thread count) to begin with. You'll get better picture if you buy proper fitting lenses and avoid adapters.
628682
I just checked mine with a caliper, and they'll close down to about 55mm. My eyes are pretty close set at 61mm, and they work for me.
323541
Yes,The eyepiece is a standard 1.25 and is removable,any 1.25 eyepiece should fit this scope.
2136316
Measure your eye piece if its 1.25" that's 1" & 1/4" inches. If yes then yes. If you are on computer then go to google, type in your model and in the info it pulls up it will say the eye size. Hope this helps.
754125
This is the measure between each eyepiece and your eyes while you view a full image. This spec is particularly important to people who wear eyeglasses. With glasses , you'll need 11 mm or more of eye relief. Most manufacturers recommend that people who wear glasses roll down the rubber eyepiece collars for viewing. On the 10x25's that will be 18 mm. ( On 8x 25 it would be 10 mm. )
1232452
The three numbers are listed in millimeters. The first number is the width of each lens, the second is the width of the bridge (the area between each lens) and the third number is the length of each of the arms. http://www.framesdirect.com/include/information/frame_size_guide.aspx
1243564
Any 1.25 inch eyepiece should be compatible. A search indicates that series is 1.25", so yes. Should work fine.
896796
Bernard, these are approx 13mm. They are very slightly smaller than the originals on my eye glasses but I haven't noticed that difference since first installing them. I'm very happy with the product. I hope this helps you.
2030131
The number in MM represents the diameter of the filter - the size of it. Make sure you get the right size or else it will not fit on your cameras lens. You can find the filter mount diameter on the lens itself.
1343358
I have the exactly same problem. Don't know where to buy the correct eyepiece.
919653
My dial micrometers show 1.660&lt;1.665. They are not perfectly round. Hope this helps.
2071543
I physically measured mine using a digital caliper, it can only hold lenses with diameter 65mm safely.
1520884
I don't have that camera, so I can't tell you directly. However, if your lens can accept screw-on attachments it will tell you in small numbers on the very front of the lens what the diameter is. The threads are standardized, so you just need the right diameter ... usually in the 48 - 58 mm range for "normal" lenses.
886082
The lens should indicate what filter diameter it uses. Look for a symbol like an O with a slash through it, which will be followed by a number. That number is the filter size in mm.