Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 346
Fig. 106 Fig. 107baerus draft gauge multiplication varying from eight to ten times is obtainedunder these circumstances; in other words, with i/4-inchdraft the movement of the line of demarcation is some 2inches. The instrument is calibrated by referring it tothe ordinary U-tube gauge. 334 Steam…
