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-126 OMB Circular A-126 OMB Circular A-126, revised May 22, 1992, is a Government circular that introduces standards and policies to minimize the cost and improve the management and use of United States Government aircraft. Specifically, OMB Circular A-126 addresses the acquisition, management, usage, cost accounting, and disposal of government aircraft. All policies presented by this circular apply to Executive Agencies, with special policy covering the travel by senior officials or non-Federal travelers on government aircraft that is government-owned, leased, chartered or rented and any related services that apply. The only exceptions are aircraft that is in use by or in