CONTENTS. Page. TOLERANCES AND SPECIFICATIONS FOR WEIGHTS AND MEASURES AND WEIGHING AND MEASURING DEVICES. I. APPLICATION OF TOLERANCES AND SPECIFICATIONS. These tolerances and specifications are to be construed to apply to the usual types of weights and measures and weighing and measuring devices used in ordinary commercial transactions or usually coming within the jurisdiction of the weights and measures official, but only when a proper classification is herein provided for them. They shall also be construed to apply to apparatus used for special purposes, whenever and in so far as they are clearly applicable, but not otherwise. II. CLASSIFICATION OF SPECIFICATIONS. The following specifications on weights and measures and weighing and measuring devices shall be divided into two sets, the first to be retroactive and to apply to all apparatus immediately upon adoption of the specifications, the second to apply only to new apparatus. For the purpose of administration the following classes of apparatus are established. Class 1. Weights and measures and weighing and measuring devices which, after the promulgation of these specifications, are manufactured in the State or brought into the State. Class 2. Weights and measures and weighing and measuring devices which are in the State at the time of promulgation of these specifications, either in use, or in the stock of manufacturers of, or dealers in, such apparatus. All the specifications shall apply to apparatus of class 1. The specifications printed in italics shall not apply to apparatus of class 2, and therefore shall not be retroactive. III. LINEAR MEASURES. Specifications.-1. Measures of length shall be made of a material, the form and dimensions of which remain reasonably permanent under normal conditions-for example, steel, brass, hard wood, etc.: Provided, however, That tapes for commercial purposes may be made of cloth, but only when this is wire-woven, and when by this means an actual and sufficient reinforcement and permanency is obtained. 2. The ends of measures of length made of wood, or of other nonmetallic material liable to wear away through use, shall be protected by some metal not softer than brass, firmly attached to the measure. 3. Rigid measures of length shall be smooth and straight. 4. Folding measures of length shall be so constructed that each section will come to a definite stop when straightened out. 3 5. Measures of length shall be graduated in units of the customary system and its usual subdivisions. 6. All graduations shall be clear and distinct and the main graduations shall be plainly designated. The length of these main graduations shall be greater than that of the intermediate graduations, and the latter shall be varied in length in such a way that they may be conveniently read. 7. Graduations shall not be greater in width than one-quarter of the width of the smallest subdivision: Provided, however, That if line graduations are employed, their width shall not exceed 0.03 inch; if raised graduations are employed, their width shall not exceed 0.12 inch at their widest point. 8. All graduations shall be uniformly spaced and be perpendicular to the edge of the measure. 9. Measures of length, so called, defined by tacks driven into a counter, or in any similar way, shall not be allowed. Tolerances. The tolerances to be allowed in excess or deficiency on all measures of length except tapes of steel or other metal shall not be greater than the following values: Provided, however, That the manufacturers' tolerances or the tolerances to be allowed on all new measures of length, except tapes of steel or other metal, shall not be greater than one-half of the values given. The tolerances to be allowed in excess or deficiency on all tapes of steel or other metal shall not be greater than the following values: |