The Starrett No.25-631 -.0005*_ Indicator is a precision tool used for metalworking inspection and measurement. Made by the reputable brand Starrett, this indicator is designed to accurately measure extremely small differences in size or position. However, it is important to note that the needle of this indicator may be slightly bent, which could affect its accuracy. This product is ideal for CNC machining, metalworking, and manufacturing applications where precise measurements are essential for quality control.