Cutlery and Allied Trades Research Association Cutlery and Allied Trades Research Association Cutlery and Allied Trades Research Association (CATRA) is an internationally known research and technology organisation in Sheffield, England which specialises in knives, cutlery, tableware, metallic holloware (such as saucepans), shaving razors, industrial knives/ blades and hand/garden tools. CATRA was originally set up by the British Government in 1952 to carry out developments for the UK's cutlery and knife industries, for which the area of Sheffield in Yorkshire is world-famous. CATRA has developed a range of unique machines for measuring the cutting performance of all types of cutting edges from razor blades to large knives
Messer (weapon) Landsknecht. There is a typology created by James G. Elmslie for messers and falchions similar to the Oakeshott typology based on ongoing research. Messer are characterized by their single-edged blades. The lengths and shapes of the blade can vary greatly. Messer blades can be straight or curved. Extant examples of langes messer seem to have an overall length of with a blade, and a weight between . The defining characteristic of messer is their hilt construction. Quite notable in its construction was the attachment of blade to the hilt via a slab tang sandwiched between two wooden grip plates that