Macro shot of a circuit board taken with D700, extension tubes, and Tamron 28-75/2.8 zoom. The three little "blocks" on the left side are each 1mm x 0.5mm x 0.35mm, or 4/100" x 2/100" x 3/100". with the narrow end (.5mm x .35mm) facing the camera.

The entire field of this image is about 12mm (1/2 inch) wide.