stopcock system
Datelate 19th-early 20th Century
Inventory Number4988
ClassificationGlassware
Subject
Maker
American
?
User
Theodore William Richards
1868 - 1928
Cultural Region
Place of Use
Dimensions31 x 8 x 1.9 cm (12 3/16 x 3 1/8 x 3/4 in.)
Material
DescriptionStopcock with an oblique hole that fits into a glass tube with two side necks. One side neck is above the stopcock while the other is below it. Tubing meeting stopcok holes extends out on two sides.
Signedunsigned
Curatorial RemarksIdentical to 4989.
Todd Scientific Company
Date: 1955-1965
Object number: 1996-1-0396
American
Date: late 19th-early 20th Century
Accessories: See curatorial remarks
Object number: 3801
Crosby Steam Gage & Valve Company
Date: circa 1910
Accessories: original and photocopy of letter from Dr. Joachim Fischer in Berlin requesting information and photographs of mechanical integrating devices from William J.H. Andrewes, dated 13 October 1993
photocopy of letter from William J.H. Andrewes to Dr. Joachim Fischer, providing information on the planimeter and requesting details for his desired photographs; original and photocopy of letter from William J.H. Andrewes to Dr. Joachim Fischer, responding to a request regarding mechanical integrators acquired from the Aiken computer laboratory, dated 11 April 1997; letter from William J. H. Andrewes to Dr. Joachim Fischer that accompanied the photographs, dated 26 April 1995; film and eleven color photographs of the instrument, probably copies of those sent to Dr. Joachim Fischer
Object number: 1995-1-0003
