Carpenter . t ^ e>» circle, by a straight line, and it ought tobe known to all mechanics and mathema-ticians. Of course I will state here that cir-cles cannot be measured exactly. It shall also seem absurd to nine-tenths of the car-penters that a person having the keenest pos-sible eyesight is unable to measure onestraight line exactly. There are a fewstraight lines that can be computed exactlyby figures, but more than one hundredunknown straight lines remain unknown,compared with one unknown, that may befigured. Any brother desiring a demonstration maycall for it through our regular channe
Carpenter . t ^ e>» circle, by a straight line, and it ought tobe known to all mechanics and mathema-ticians. Of course I will state here that cir-cles cannot be measured exactly. It shall also seem absurd to nine-tenths of the car-penters that a person having the keenest pos-sible eyesight is unable to measure onestraight line exactly. There are a fewstraight lines that can be computed exactlyby figures, but more than one hundredunknown straight lines remain unknown,compared with one unknown, that may befigured. Any brother desiring a demonstration maycall for it through our regular channel andI will a-^- Here A-C is any size of diameter andB-D is its radius, E-F is a parallel line toA-C, touching curve A-D-C. Spread thecompasses from A to C and curve from Ato G, also from C to G; then draw a straightline through A-G to E and through G-C toF, and E-F is length of half circle, andtwice E-P is the circle, and a half of E-P isone-fourth of circle, as E-D. Number of Boards to a Sctuare. —10 Feet Long—24 boards 5 inches nards 6 inches boards 7 inches wide. 15 boards 8 inches wide. 13 boards 9 inches boards 10 inches wide. —12 Feet Long—20 boards 5 inches wide. 16 boards 6 inches wide. 14 boards 7 inches boards 8 inches boards 9 inches boards 10 inches wide. 46 THE CARPENTER To space out any numtier of details, suchas balusters or pickets, the thickness orwidth of same being given. If a limitednumber, place them together and measuretheir total width. Subtract this from thewhole length to be spaced into, working ininches and fractio
Size: 1720px × 1452px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorunitedbr, bookcentury1900, bookdecade1910, bookyear1911
