This set of two Maximum Cards showcases the technical innovations from Liechtenstein. The postcards feature a caliper gauge and a calculating machine, both manufactured in the year 2006. The postcards are in the continental size of 6 x 4 inches and have a divided back for easy writing. The postcards are unposted and in their original state, making them a great addition to any collection of technology-themed postcards. The postcards are made of paper and are an original print from Liechtenstein.