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Scientific American, Vol. 60, No. 23 (1889) (1889)
leaf 3
der, these passages being again blocks adjustable upon the guide-bed, the vertical these spurs being adapted to engage each other when connected by branch passages with the enlarged por- members of these blocks projecting upward between the upper arm ‘is essentially at a right angle to the tion of… … troscope are supported on a little rod of quartz % in. BACKER’S GUIDE FOR BAND-SAWS. © 1889 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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