Standard Company Name:	L.E. Knott Apparatus Company
Company Name:	L.E. Knott Apparatus Company
Title:	ACatalogue of Physical Instruments / Catalogue 17
Imprint:	United States (Boston, MA: 1912)
Pagination and Size:	524 p.; 26 x 20 cm
Material Type and Language:	Trade catalogs; English
Instrument Types:	Instruments represented: hydraulic presses, balances and slide rules
Notes:	Item Number: 51733. Includes preface; index; directions and terms; prices.
Subject Area:	Balances ; Physics ; Mathematical Instruments
Digital Availability:	HTML Page

Standard Company Name:	C. Gerhardt
Company Name:	C. Gerhardt
Title:	Preis-Verzeichnis über Physikalische Apparate, Instrumente und Gerätschaften
Imprint:	Germany (Bonn: 1893)
Pagination and Size:	166 p.; 27 x 19 cm
Material Type and Language:	Trade catalogs; German
Instrument Types:	Instruments represented: balances, electromagnets and thermometers
Notes:	Item Number: 52520. Includes content; description of instruments; prices; index.
Subject Area:	Physics ; Balances ; Electricity
Digital Availability:	HTML Page