Metal Detectable Desktop Calculator Metal detectable calculators, which are suitable for almost all food applications, including environments with greasy and powdery and cold conditions, are made from a metal detectable “Super X” polymer, which is X-ray visible and has the added bonus of an anti-microbial agent. These calculators perform well in both warm and lower working temperatures, and is also made from high-impact and non-shatter material, so it will not easily damage if dropped or rolled off any work surface. The Desktop calculator has large, easy to use display buttons. Comes automatic shut-off, 12 digits, % and Mark up buttons. Measures approximately 5.9” x 4.72”. Uses DC 1.5V AAA batteries.