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-130 OMB Circular A-130 OMB Circular A-130, titled Management of Federal Information Resources, is one of many Government circulars produced by the United States Federal Government to establish policy for executive branch departments and agencies. Circular A-130 was first issued in December 1985 to meet information resource management requirements that were included in the Paperwork Reduction Act (PRA) of 1980. Specifically, the PRA assigned responsibility to the OMB Director to develop and maintain a comprehensive set of information resources management policies for use across the Federal government, and to promote the application of information technology to improve the use and dissemination