The US Patent for an âExhaust muffler for enginesâ was awarded to Milton O. Reeves and Marshall T. Reeves of Columbus, Indiana of the Reeves Pulley Company on 11 May 1897. US Patent Office application â 582485 states that they âhave invented certain new and useful Improvements in Exhaust-Mufflers for enginesâ.
Protractor, an end-to-end testing framework, supports Jasmine and is specifically built for AngularJS application. It is highly flexible with different Protractor, an end-to-end testing framework, supports Jasmine and is specifically built for AngularJS application. It is highly flexible with different Behavior-Driven Development (BDD) frameworks such as Cucumber. It allows writing specifications based on the behavior of the application.
The bevel protractor is used to establish and test angles to very close tolerances. It reads to 5 minutes or 1/12Â° and can measure any angle from 0Â° to 360Â°. The bevel protractor consists of a beam, a graduated dial and a blade which is connected to a swivel plate (with Vernier scale) by thumb nut and clamp. When the edges of the beam and blade are parallel, a small mark on the swivel plate coincides with the zero line on the graduated dial.