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It's there at his girdle. It clinked indeed among rules, T-squares and callipers at each footstep of the heavy printer between press and table. Magister Udal stretched his thin hands towards it. 'I will give you the printing of the Lady Mary's commentary of Plautus for that key, he said.
The carriages are rendered very movable by substituting rolling for a sliding friction of the axes. To this effect, the extremities of the axes of the wheels that support and guide them are made thin, and roll over the plane surface of recesses formed for the purpose in the lateral steel surfaces of the carriages, while the circumference of the wheels rolls in grooves along the two T-squares.
Popular speech has taken it in its present connotation from the technical vocabulary of engineering, and the term has brought with it a very refreshing sense of accuracy and practicality. It suggests blueprints and T-squares and mathematical formulæ. A faint and rather pleasant odor of lubricating oil and cotton waste seems to hover about it.
And amidst the bare untidiness of this shed, the eye was especially attracted by the walls which, above, displayed a litter of plaster casts ranged in haphazard fashion on shelves, and disappeared lower down behind forests of T-squares and bevels, and piles of drawing boards, tied together with webbing straps.
There were no "Windsor and Newtons," no nice makers of dividers and T-squares, to whom one could apply; all implements must be constructed by the man who contemplated using them. We will see how Theophilus proceeds, after he has his tools in readiness, to construct a chalice. This process of casting would apply equally to all metals.
The following three weeks sped like a dream, so far as the individual chiefly interested was concerned; during the day he was kept continually busy by Mr Butler in the preparation of lists of the several instruments, articles, and things from theodolites, levels, measuring chains, steel tapes, ranging rods, wire lines, sounding chains, drawing and tracing paper, cases of instruments, colour boxes, T-squares, steel straight-edges, and drawing pins, to tents, camp furniture, and saddlery and procuring the same.
Compasses, T-squares, rulers, protractors, and ellipsographs obeyed the touch of his fingers as if inspired with life.
An iron ruler, I, parallel with the axis of the X's, is fixed upon a drawing-board, and is provided with a longitudinal groove in its upper surface. In this groove move two rollers, which, in the center of the piece that connects them, carry two brass T-squares that are parallel with each other and at right angles with the first, or parallel with the axis of the Y's.
His father, after one infantile disastrous raid, had absolutely forbidden any visitation of that cabinet, with its glass case of assorted paints, crayons, brushes and pencils, and its innumerable long drawers full of paper and cards and wondrous perfectly equipped boxes, and T-squares and set-squares, with a hundred other contrivances. But of course the order had now ceased to have force.
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