Buchanan's improved patent Delta metal pressure, vacuum, and compound gauges (Bourdon's patent)
Publisher: Hannan & Buchanan
Published: 1880
Place of publication: Glasgow
Language: eng
Notes: "Sole manufacturers Hannan & Buchanan, 75 Robertston Street, Glasgow".

"Price (with cock and coupling tail)--7 ins., 30s.; 6 ins., 27s.; 5 ins., 24s.; 4 ins., 20s."

Broadside.