Candidates should be familiar with the following (Handbook of the 3-inch Materiel): Nomenclature of harness and of the parts and accessories of the wheeled materiel; use of oils; method of cleaning and lubricating parts and mechanisms; method of cleaning cylinder oil and of emptying and filling cylinders; use of tools; the kinds of projectiles, of fuses, and of powder actually issued for use, and their general purpose and effect, omitting questions as to construction, weight, manufacture, and technical description; the care and preservation of saddle and harness equipment in use. Description of: breech mechanism to dismount, to assemble, elevating screws, to dismount; to assemble; hub liner, to remove, to assemble; brakes, piece and caisson, to adjust; wheel, to remove, to replace. REGULATIONS FOR THE EXAMINATION OF GUNNERS. A record of marks will be kept during the examination, and at the conclusion thereof it will be submitted directly to the commander ordering the examination. The mark received by each man in each subject will appear opposite the man’s name and the appropriate totals will be carried out. The tabular list, upon approval by the commander ordering the examination, will be published in orders. Men, to be classified as expert first class gunners, must attain an average of not less than 85% in each of the subjects which follow: to be classed as first class gunners, a general average of not less than 85% with an average in each subject of not less than 75%; to be classed as second class gunners, a general average of not less than 75%, with an average in each subject of not less than 65%. Examinations will include the following: Value of Subjects. Subject. Gun Batteries. Direct laying 24 Indirect laying 24 Laying for range 18 Fuse setting 18 Drill of the Gun Squad 8 Materiel 8 The following general rules will govern the Examining Officers: 1. The conditions of examination will be made, as nearly as possible, the same for all of the men. 2. Setting of scales will be considered correct if any part of the index is coincident with any part of the line of the graduation of the setting ordered. 3. Settings ordered will always be even divisions of the scale, and not fraction thereof. When a number greater than five is used, it will be a multiple of five, except in settings of the angle of site and corrector scales. 4. The man may select any of the assistants authorized. 5. The man is permitted to traverse the piece to the middle point of traverse before each trial at direct laying. 6. The sight, quadrant, or fuse setter, etc., will be in the position in which it would be in service before the command for trial with it is given; the scales will be set at readings different from those to be given for the trial.