HOW TO LEVEL WITH SQUARE AND PLUMB-LINE.

New Zealand Mail, Issue 1682, 25 May 1904, Page 66

HOW TO LEVEL WITH SQUARE AND PLUMB-LINE.

• The common carpenter’s square and a pi limp-line may be made to serve as a substitute for the spirit level for many purposes on the farm or elsewhere, when

a level is not ait tend. 'Pie manner of getting 'Che square in position to level a wall, for instance, is shown in Figure 1. A piece of board. 3ft in length, having one end sharpened, is driven into the ground for a rest; a notch is made in' the top of the stick large enough to hol'd the square firmiy in position, as shown in the engraving. A line and weight, held near the short arm, and parallel to it, will! leave the long arm of tlhe square level. By sighting over the top of the square, any irregularities in the object to be 'levelled are readily discovered, A method to find the number of feet in a descent in the ground . is illustrated by Figure 2. The square is placed as before directed; then a sight

i« taken over and -along file upper edge of the square to a polle .or rod placed at a desired point.. Tlie point on the pole which is struck by the line of sight Shows the difference between the levels of the two places. This method will be found applicable-in laying out drains, where a certain desired fail is to be given to the ditch.- —“Farm Conveniences.”