In some tables the ditto symbol („) has been replaced with the dittoed text; the use of × and x in multiplications and dimensions has been standardised to ×.
Page 48: Figure numbers 45-49 added to illustration.
Page 89: and on B on B I changed to and on B on B D.
Page 177: D = diam. of collar changed to d = diam. of collar.
Page 193: Bbt.--Babbit. changed to Bbt.--Babbitt.
Page 203: as described on page 191 changed to as described on page 199.
Page 214: 4 tenths measured at the 2′ line changed to 4 tenths measured at the 2″ line.