Which tool can be used to mark 45 and 90-degree angles effectively?

The combination square is an effective tool for marking 45 and 90-degree angles due to its adjustable ruler and angular head. This tool typically features a ruler that can slide along a machined groove and a protractor head that allows for accurate angle measurements. The 90-degree angle is a standard feature, providing a precise right angle for a variety of applications. Additionally, the 45-degree angle can be easily obtained by aligning the marking tool with the protractor head, allowing for quick and accurate layout of angles on materials such as wood, metal, or other surfaces. This versatility makes the combination square a fundamental tool in various carpentry and construction tasks, ensuring accuracy in angles for projects such as framing or cabinetry.

Other tools, while useful in their own rights, may not provide the same level of ease or precision for marking both angles. For instance, a framing square is primarily designed for framing applications and establishing right angles, but it is less convenient for marking during layout processes or for transporting to different job sites. The marking gauge is primarily used for scribing parallel lines and might not be suitable for measuring angles at all. A layout square also serves a specific purpose but typically lacks the adjustability and flexibility that a combination square offers for both