Disclosed herein is a food product portioning apparatus comprising: a rotary-to-linear movement device; a support device, such as a platform, connected to the rotary-to-linear movement for receiving the food product thereon and moveable to position the food product at a predetermined height; and a cutting apparatus to portion the food product at the predetermined height. A first pattern of colored ink is deposited on a transparent or highly translucent substrate at 110-180 density, forming the image which is to be hidden. between an end flange and a tubular pole-unit housing for a circuit interrupter or an insulating support column. The holding structure further comprises a rotator mechanism configured to rotate the holding structure in the first direction about the axis.