The Instrument of Government was a constitution of the Commonwealth of England, Scotland and Ireland. Drafted by Major-General John Lambert in 1653, it was the first sovereign codified and written constitution in England. Antecedence. The Instrument of Government included elements incorporated from an earlier ...

Science and technology. Flight instruments, the devices used to measure the speed, altitude, and pertinent flight angles of various kinds of aircraft; Laboratory equipment, the measuring tools used in a scientific laboratory, often electronic in nature; Mathematical instrument, devices used in geometric construction or measurements in astronomy, surveying and navigation