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• Musical instruments are devices designed to produce music, frequently by plucking or striking a string or bell or drum surface, or by forcing air to resonate (see wind instruments).
• Scientific instruments are devices intended to assist in the conduct of science. An example would be the test tubes and other glassware one might find in a chemistry or biology laboratory.
• Measuring instruments are devices used to measure or compare the magnitude of physical properties , such as voltmeters.
• Analytical instrument s are devices used to measure multiple or complex material properties , such as mass spectrometers.
• Medical instrument s are devices for the diagnosis and treatment of diseases, such as stethoscopes.
• Legal instruments are documents used to formally document various types of transactions or confirm certain statuses for specific purposes, such as confirming contractual relations, civil status, etc. Examples include wills, writIn law, a writ is a formal written order issued by a government entity in the name of the sovereign power. In most cases, this government entity is a court. Two kinds of writs are warrants and prerogative writs but there are many others. English Law Histos, court orderA court order is an official proclamation by a judge (or panel of judges) that defines the legal relationships between the parties before the court and requires or authorises the carrying out of certain steps by one or more parties to a case. It can be a, contractA contract is any promise or set of promises made by one party to another for the breach of which the law provides a remedy. The promise or promises may be express (either written or oral) or may be implied from circumstances. Typically, the remedy for brs, treatiesA treaty is a binding agreement under international law concluded by subjects of international law, namely states and international organizations. Treaties can be called by many names: treaties, international agreements, protocols, covenants, conventions,, marriage licenseA marriage license is permission from a legal authority for the marriage of two people to be performed. The requirements differ depending on the time and place: licenses to marry have been granted since the Middle Ages. Valid marriages can occur without as and driver's licenseEuropean Union are subdivided in different categories. A driver's license ( UK: driving licence US: driver's license or driver license Canada, Australia, New Zealand: driver's licence is an official document which states that a person has the necessary qus.
• Financial instruments are documents used to formally document various types of financial transactions. Examples include loan agreement s, bondIn finance and economics, a bond or debenture is a debt instrument that obligates the issuer to pay to the bondholder the principal (the original amount of the loan) plus interest. Thus, a bond is essentially an I. I owe you contract) issued by a privates, mortgages, stocks and floating charge s.