Protractor on the dial from 180°, as the dial is graduated from opposite zero marks to 90° each way. Since the spaces, both on the main scale and the Vernier scale, are numbered both to the right and to the left from zero, any angle can be measured. The readings can be taken either to the right or to the left, according to the direction in which the zero on the main scale is moved. Reading the Vernier scale: The bevel protractor Vernier scale may have graduations of 5′ (minutes) or 1/12°. Each space on the Vernier scale is 5′ less
OMB Circular A-21 OMB Circular A-21 OMB Circular A-21 is a Government circular that sets forth the rules governing the eligibility and calculation of costs in support of sponsored research, development, training and other works produced in agreement with the United States Federal Government, but does not attempt to identify or dictate agency or institutional participation in those works. The last revision is dated May 10, 2004. This circular is divided into ten sections: This section outlines the principles and policies that must be followed regarding the accounting principles, arrangements, and exemptions for any training or work produced under the contract as agreed