To convert 34.5 millimeter to inch, multiply by the conversion factor 0.039370. So, 34.5 millimeter multiplied by 0.039370 equals 1.358265 inch.

34.5 millimeter equals exactly 1.358265 inch. For practical purposes, this is often rounded to 1.3583 inch.

Objects measuring approximately 34.5 millimeter include the diameter of a compact watch case (e.g., 34-35mm), the outer diameter of a 1-3/8 inch nominal pipe (34.925mm), or a specific 34mm bottle cap.

Converting millimeter to inch is useful for international collaboration in engineering, manufacturing, and construction, bridging metric and imperial system users. It is essential for understanding product specifications, tool compatibility, and design requirements in regions using different measurement standards.

A quick estimation is to multiply 34.5 by 0.04 (approximate 1mm = 0.04 inch). For precise recall, remember the factor 0.039370. Visually, think of 34.5mm as slightly larger than a US quarter or about 1.36 inches, roughly the length of a large paperclip.