Yhdistelmäkulmamittari

Yhdistelmäkulmamittari, often translated as a combination protractor or universal protractor, is a versatile measuring instrument used in metalworking and carpentry. It combines the functions of a protractor, rule, depth gauge, and scribing tool into a single, adjustable device. This multi-functionality makes it a valuable tool for precise layout and measurement tasks.

The typical yhdistelmäkulmamittari consists of a graduated steel rule that can slide through a central head. This head can be rotated and locked at various angles, allowing for the measurement and marking of angles. The head usually includes a spirit level for ensuring horizontal or vertical alignment. It also features a removable center head for tasks like finding the center of a round or square workpiece, and a depth gauge attachment that uses the sliding rule to measure the depth of holes or recesses.

By adjusting the position and angle of the head relative to the rule, a user can perform a wide range of operations. These include measuring and transferring angles, laying out 90-degree and 45-degree angles, marking lines parallel or perpendicular to an edge, and measuring depths. The ability to combine these functions in one tool reduces the need for multiple individual measuring instruments, thereby saving time and improving efficiency in workshops. Its robust construction, typically from hardened steel, ensures durability and accuracy for professional use.