Plumb Rule

To save the trouble of keeping the plumb-rule and level constantly in his hands and yet ensure correct work, the bricklayer, on clearing the footings of a wall, builds up six or eight courses of bricks at the external angles (see fig. 1), which he carefully plumbs and levels across. ❋ Various (N/A)

In work circular on plan, besides the level and plumb-rule, a gauge mould or template, or a ranging trammel -- a rod working on a pivot at the centre of the curve, and in length equalling the radius -- must be used for every course, as it is evident that the line and pins cannot be applied to this in the manner just described. ❋ Various (N/A)

The workman, beginning at the extreme left of his section, or at a quoin, advances to the right, carefully keeping to his line and frequently testing his work with the plumb-rule, spirit-level and straight-edge, until he reaches another angle, or the end of his section. ❋ Various (N/A)

Having been carried up three or four courses to a level with the guidance of the line which is raised course by course, the work should be proved with the level and plumb-rule, particularly with the latter at the quoins and reveals, as well as over the face. ❋ Various (N/A)

I should demand the invariable application to individuality, this day and any day, of that old, ever-true plumb-rule of persons, eras, nations. ❋ Unknown (1892)

The tools and implements employed by the bricklayer are: -- the trowel for spreading the mortar; the plumb-rule to keep the work perpendicular, or in the case of an inclined or battering wall, to a regular batter, for the plumb-rule may be made to suit any required inclination; the spirit-level to keep the work horizontal, often used in conjunction with a straight-edge in order to test a greater length; and the gauge-rod with the brick-courses marked on it. ❋ Various (N/A)