Abstract: The four components of the deviations of a rotary table from an ideal axis of rotation can be obtained by a single measuring method wherein a test body (4) having a plurality of well-defined measurement points is placed on the rotary table (1) and the positions of said measuring points are then determined by means of a coordinate-measuring instrument (3), for each of various angular positions of the rotary table, there being thus a set of ascertained measurement-point coordinates for each of the angular positions of the rotary table. From the sets of measurement-point coordinates, the travel deviations f.sub.a, f.sub.r and f.sub.t of the axis of rotation, and the angle-position deviation p.sub.w are then determined by calculation.

Abstract: In a gear tooth having a tooth surface, the gear contact pattern is inspected by the steps of measuring the tooth surface at regularly positioned measuring points to detect deviations from a standard gear profile at corresponding measuring points and counting the number of such measuring points wherein the deviations are within a predetermined limit. Where the counted number is greater than a predetermined value, the tooth surface is accepted.

Abstract: A method for sequencing the cutting of elongated stock such as boards of lumber having random unusable lengths containing knots, discoloration or the like for reducing waste when cutting a mix or mixture of different grades of lumber into furniture parts by making optimum selection of parts to be cut concurrently, the method including the steps of establishing the required lengths, board footage and quantities of pieces of each length to be cut, determining a value factor for each desired length, determining waste factors for all possible combinations of lengths, establishing the probability of having a given length of usable stock in each of the grades of stock being processed, determining from said required lengths, required quantities, required board footage, value factors, probabilities, grade mix and waste factors, the combination of parts to be cut at one time which results in the lowest waste for the entire cutting.

Abstract: A gauge is provided for measuring the width of a selected word, for example "the", and using this width to determine the number of words per line on a printed page. The same gauge, in one embodiment of the invention, also includes means for determining the number of lines per page thus enabling the user to estimate the number of words per printed page for speed reading purposes.

Abstract: A method and apparatus for selecting the indicators on a backgauge of a crosscut saw to optimize the yield of usable lengths of stock such as boards of lumber having random unusable lengths containing knots, discoloration or the like from a grade mix of material being processed including the steps of determining the lengths of stock required, storing information describing the required lengths, calculating a value factor for each required length, and storing the value factor, storing statistical data describing usable lengths in various grades of stock, storing information on the proportions of the various grades being processed, determining and storing priority factors to increase the probability of cutting desired lengths, calculating the positions for the backgauge indicators, based on the stored information, which represent optimum possible combinations of lengths for each usable length which can be cut into the desired lengths, and listing the indicators at positions of full scale on a continuous sheet o