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where do you measure for the size? Inner diameter or outer diameter? — 4 Answers

by Striker5x5, from MI, United States Asked on December 20, 2024

Name German Precision Optics Centuri 2.5-15x44mm 30mm Tube Rifle Scope, Second Focal Plane (5)
$769.99 $699.99 Save $70.00
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Manufacturer Answer
A
Answered by GPO-USA, Manufacturer from VA, United States, on February 26, 2025

The actual diameter of the objective lens is 44mm. it is fit inside the tube, so the inside diameter of the objective tube is slightly smaller than 44mm, and the outside of the objective lens is slightly larger than 44mm.

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Manufacturer Answer
A
Answered by GPO-USA, Manufacturer from VA, United States, on January 29, 2025

Objective lens diameter is the size of the lens. This measurement is slightly larger than the inside diameter of the objective opening and slightly smaller than the outside diameter. Regarding the 30mm tube, this is an outside diameter measurement.

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Manufacturer Answer
A
Answered by GPO-USA, Manufacturer from VA, United States, on January 22, 2025

The products objective lens diameter is the size of the lens. It is not an inner or outer measurement. It is actually larger that the inner dimension of the objective tube and smaller than the outside diameter.

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Answered by GPO-USA, Manufacturer from VA, United States, on January 01, 2025

The 44mm measurements is the objective lens diameter. It’s slightly larger than the inside edge of the front tube, and slightly smaller than the outside diameter of the objective tube.

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