Fred T. Hodgson · Frederick J. Drake and Co. · leaf 224
illustration No.19 shows a template andvarious sorts of template pins.Fig. 1 is a view of a template,with the two pins, rod, with therunning mould attached in position, and a part of a moulding. Fig. 2 shows various sec-tions of pins. A is the section of the pin as used in Fig. 1,and C is the plan… … -tTrammels.NO. 19, 222 CEMENTS AND CONCRETES The average size for this kind of trammel is about 1 foot6 inches long, 1 inch wide, and 1-4 inch thick. A seriesof holes 1-4 inch in diameter (to fit the head of the pin)is made about 1-8 inch apart on the fiat side. The firsthole is made near one end…