I ordered the shield for a 123mm to 142mm diameter scope for my NexStar 127 SLT going by the aperture of 127mm. Wrong! It was too small. The outside diameter of the scope is 144mm. I ordered the 147mm to 167mm and it fits perfectly. In retrospect, if I had read the description more carefully, I would have seen that the dew shields are sized for the front Outside Diameter of the scope. This is a great dew shield. It fits well, stays in place, blocks extraneous light and prevented the formation of dew on the front plate of my scope when I was using it tonight.
A Durable And Protective CaseSack For Bose QuietComfort And SoundLink Headphones
41 Review
Protect Your Earbuds On-The-Go With Small And Portable EVA Case - Perfect For Airpods, USB Drives, Cables And More!
34 Review
Classic Camera Bag, Evecase Large Canvas Messenger SLR/DSLR Shoulder Case With Leather Trim, Tablet Compartment And Removable Insert For Mirrorless, Micro 4/3, Compact System, High Zoom Digital Camera
41 Review
Soft Silicone AirPods Case Cover With Visible LED - Compatible With AirPod 2/1 Cases, Keychain Accessory Included - Ideal For Men, Women, Girls, And Boys - Light Pink
37 Review