CHAPTER XV.

=MEASURING TOOLS.=

=End Measurements= of large lathe work 376 Template gauges for 376 Trammels or Trains 377 Adjustable gauges for 377 =Compasses=--Dividers 377 Compass calipers 378 =Key Seating= rule 378 =Surface Gauge= 378 Pattern makers' pipe gauge 379 =Squares.= The try square 379 The T square 379 Various methods of testing squares 379, 380 Bevel squares 380 =Bevel Protractors= 380 =Hexagon Gauge= 381 =Straight Edge= and its applications 381, 382 Winding strips and their application 382 =Surface Plate= or planimeter 383 =Templates= for curves 384 =Wire Gauges=, notch 384 Standard gauges for wire, &c. 384, 386 Gauge for music wire 386 Brown and Sharpe wire gauge 387 Birmingham wire gauge for rolled shell silver and gold 387 Sheet iron gauge, Russian 387 Galvanized iron 387 Belgian sheet zinc 387 American sheet zinc 387 =Rifle Bore= gauge 387 =Strength of Wire=, Kirkaldy's experiments 387, 388