How To Measure Scope Covers

Are you struggling to find the right scope cover for your rifle? It can be frustrating when you’re trying to protect your investment, but can’t seem to find the right fit.

choosing the right scope cover is important to protect your rifle from damage and keep it in good condition. However, not all scope covers are created equal, and finding the right one can be a challenge.

If you’re struggling to find the right scope cover, the first step is to measure your scope. Measuring your scope is crucial to finding the perfect fit, but it can be a daunting task if you’ve never done it before. In this article, we’ll show you how to measure your scope covers and provide some tips to help you find the right one for your rifle.

Why Measure Scope Covers

There are various types and sizes of scope covers available on the market. It’s essential to measure your scope accurately before buying a cover to ensure a perfect fit. A poorly fitting scope cover won’t offer the necessary protection to your scope. Moreover, it may slip off or block your view, which can be dangerous if you’re shooting at a moving target.

Why Should You Measure Your Scope Cover Size

Choosing the right size scope cover is essential to keep your scope lenses safe from damage. A correctly sized cover will provide a snug fit, keeping out dust and debris and protecting your scope lenses from scratches and impacts. A poorly fitted cover will not only fail to protect your lenses but also create a hindrance while working with the scope. Therefore, it is necessary to measure your scope covers correctly to avoid these issues.

What Tools Do You Need

Measuring the scope cover requires only a few simple tools that you probably already have at home

  • A measuring tape or ruler.
  • A pen and paper to record the measurements.

How to Measure Your Scope Covers

Here are the steps to measure your scope covers accurately

Measuring the Lens Diameter

The first step is to measure the lens diameter, which is the outermost edge of the lens. Follow these steps:

  • Place your scope on a flat surface or bench.
  • Choose the lens whose cover you want to measure.
  • Measure the outer diameter of the lens with your calipers or ruler, where the cover would fit.

Make sure to measure the diameter of the lens accurately, as it determines the size of the scope cover.

Measuring the Length of the Scope

The next step is to measure the length of the scope. It is essential to measure the scope’s length to ensure that the cover wraps around the scope correctly. Follow these steps:

  • Place the scope on a flat surface or bench.
  • Extend the eyepiece and the lens cap to their maximum length.
  • Measure from the end of the eyepiece to the objective lens’s edge.

Choosing the Right Size Scope Cover

Once you have accurate measurements of your scope lens diameter and its length, you can choose the correct scope cover size. Scope covers are available in different sizes, and the packaging specifies the lens diameter measurement and the length.

How To Measure Scope Covers

How to Choose the Right Scope Cover

After measuring the scope, it’s time to choose the right scope cover. Consider the following factors before buying

  • Material: Choose a cover made of durable and high-quality material that can withstand wear and tear.
  • Type: Depending on your needs, you can choose from various types of covers like flip-up, bikini, or full-cover.
  • Brand: Buy from a reputable and trustworthy brand that offers a warranty or guarantee.

Common Mistakes When Choosing a Scope Cover

When choosing a scope cover, it is essential to avoid common mistakes such as

  • Choosing a Cover that is the Wrong Size: This error is most common when a shooter tries to eyeball the lens’s diameter instead of measuring it accurately. Guessing the size of a scope’s lens results in covers that are too small or too large, leaving the lens uncovered or covering important parts, such as the turret knobs, and interfering with performance.
  • Compromising on Quality: Sometimes shooters purchase cheap covers that claim to fit a wide range of scopes. Although these covers may cover the scope’s lens, they lack the necessary protection and can potentially scratch the lens’s surface.

Things to Consider When Buying a Scope Cover

When buying a scope cover, consider the following

  • Material: The cover material should be durable, weather-resistant, and lightweight. Neoprene, a high-grade synthetic rubber, is one of the most popular materials for scope covers. It is affordable, stretchy, lightweight, and durable.
  • Fit: The cover should fit tightly around the scope lenses and be easy to remove and attach.
  • Design: Choose a cover design that works best for you. Some prefer flip-up design, while others prefer merely sliding the cover off.


Learning how to measure scope covers is a crucial aspect of ensuring that your firearm is safe and protected. With just a few simple steps, you can take accurate measurements and get the right size for your firearm. By following these steps, you can ensure that your scope cover fits perfectly, ultimately enhancing the safety of your firearm.

Frequently Asked Questions (FAQs)

Can I use the same scope cover for different scopes of similar size?

No, it is not recommended to use the same scope cover for different scopes, as the fit may not be precise. Using a cover that is not designed to fit your specific scope can result in damage or lack of protection.

Can I use the same size scope cover for different riflescopes?

No, it is not recommended to use the same scope cover size for different riflescopes. Each scope has a unique lens diameter and length, so it is essential to measure each scope individually.

Can I clean my scope cover?

Yes, you can clean your scope cover by wiping it down with a damp cloth. Avoid using harsh chemicals or solvents, as they can damage the cover’s material.

Can I clean my scope cover?

Yes, you can clean your scope cover with a soft, damp cloth and mild soap. Rinse thoroughly and allow it to air dry before putting it back on your scope.

How do I know if I need a flip-up scope cover or a standard one?

It depends on your preference and the type of hunting or shooting you plan to do. Flip-up scope covers are convenient for quick target acquisition and work well in situations where you need immediate access to your scope. However, standard scope covers provide more comprehensive protection and are better suited for long-term storage.

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