BALDWIN

[ MACHINES FOR TESTING THE STRENGTH OF MATERIALS; ] INSTRUMENTS RESPONSIVE TO, AND INSTRUMENTS FOR MEASURING, INDICATING, AND RECORDING STRAIN PRODUCED BY FLUID PRESSURE FORCES OR FORCES IN TENSION, COMPRESSION, TORSION, OR BENDING [ AIR SPEED MEASURING INSTRUMENTS AND ALTIMETERS; RAILWAY TRACK WEIGHING SCALES; CRANE WEIGHTING SCALES, RAILWAY VEHICLES SPECIALLY MADE FOR TESTING TRACK WEIGHING SCALES; AND WIND TUNNELS FOR TESTING AIRPLANE MODELS OR THE LIKE ]