. Department bulletin. Agriculture; Agriculture. Fig. I.—Heater Unit for External Fig. 2.—Two-Pen Extension Tube Recording Thermome- ter Sectioned and With Chart Removed. The bulbs B are connected to the instrument through the armored tubing T entering at the top of the case. The pens P and pen arms are slightly to the left of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agri
. Department bulletin. Agriculture; Agriculture. Fig. I.—Heater Unit for External Fig. 2.—Two-Pen Extension Tube Recording Thermome- ter Sectioned and With Chart Removed. The bulbs B are connected to the instrument through the armored tubing T entering at the top of the case. The pens P and pen arms are slightly to the left of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. Washington, D. C. The Dept. : Supt. of Docs. , G. P. O.
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Keywords: ., bookauth, bookcentury1900, bookdecade1920, booksubjectagriculture
