Specifications include, but are not limited to: Gauge: metal 1/16” thick, with slots that comply with the tolerances given in columns 3 and 4 of Table 1, labeled to indicate individual size fraction appropriate to that slot, scale or balance of sufficient capacity and accurate to 0.1 percent of sample mass, or 0.1 gram conforming to the requirements of AASHTO M 231 Sieves conforming to the requirements of AASHTO M 92 Other apparatus as required by AASHTO T27/T11. Procedure: Preparation of test sample: Sample Size conforming to AASHTO T 27 Sieve Analysis of Fine and Coarse Aggregate. Perform AASHTO T 11, Materials Finer than #200 Sieve in Mineral Aggregate by Washing in conjunction with AASHTO T 27. Separate aggregates into specified individual size fractions, Table 1. Material coarser than the ½” sieve and finer than the #4 sieve is discarded. Note 1: If an individual size fraction mass exceed the masses given in Table 1, the fraction may be reduced according to AASHTO T 248. The correction calculation, given below, is applied to proportionally determine the mass of flaky particles that would have been obtained had the whole of the original size fraction been gauged. Determine and sum the masses of the individual size fractions, designate as M1. Using the slot gauge: Select the slot appropriate to the individual size fraction under test (see Table 1). Gauge each particle by hand. A particle is considered flaky if it passes through the appropriate slot. Combine and determine the mass of all particles passing through the slots and designate as M2