The Primario Loupe 45 is made by cutting a 6 mm thick aluminum pipe to about 1 mm thickness. It appears to have two parts due to the seam lines on the side of the main body, but it is actually made in one piece. The three arched legs are stable even on irregular surfaces, and designed to let in the maximum amount of light to the surface it magnifies. Primario Loupe 45 is unexpectedly light and beautifully finished. Also, since you can work with tweezers from the bottom of the arch, it is a very convenient aid for hobbyists.