Mannheim slide rule
Date1915-1930
Inventory Number2003-1-0252
ClassificationSlide Rule
Subject
Maker
Keuffel & Esser Company
1867 - 1987
Place of Origin
Dimensions3.6 × 26 × 1.3 cm (1 7/16 × 10 1/4 × 1/2 in.)
Material
DescriptionRectangular wooden rule faced with white celluloid. The top and bottom slides are fixed; the center slide moves left and right and is removable. A glass runner with a vertical line down its center also moves left and right.
The fixed portion of the slide rule is printed with two scales. Along the bottom edge of the top slide is an unlabeled scale consisting of two logarithmic scales (values ranging from 1 to 10) placed side-by-side. Along the top edge of the third slide is an unlabeled logarithmic scale carrying values from 1 to 10.
The face of the moveable slide is printed with two scales. The unlabeled scale along its top edge is identical to the top scale on the fixed portion of the rule. The unlabeled scale along its bottom edge is identical to the bottom scale on the fixed portion of the rule.
The back of the moveable slide is printed with three scales. The top scale, "S", carries values from 35' to 90°. The center scale, "L", has values descending from 10 to 1. The scale along the bottom edge of the back of the slide, "T", has values ranging from 5.5 to 45.
Printed along the top edge of the rule is a 10-inch scale, part of which has chipped off. Along the bottom edge of the rule is a 25-centimeter scale, part of which has chipped off. Underneath the the removable slide is a centimeter scale carrying values from 26 to 51.
The fixed portion of the slide rule is printed with two scales. Along the bottom edge of the top slide is an unlabeled scale consisting of two logarithmic scales (values ranging from 1 to 10) placed side-by-side. Along the top edge of the third slide is an unlabeled logarithmic scale carrying values from 1 to 10.
The face of the moveable slide is printed with two scales. The unlabeled scale along its top edge is identical to the top scale on the fixed portion of the rule. The unlabeled scale along its bottom edge is identical to the bottom scale on the fixed portion of the rule.
The back of the moveable slide is printed with three scales. The top scale, "S", carries values from 35' to 90°. The center scale, "L", has values descending from 10 to 1. The scale along the bottom edge of the back of the slide, "T", has values ranging from 5.5 to 45.
Printed along the top edge of the rule is a 10-inch scale, part of which has chipped off. Along the bottom edge of the rule is a 25-centimeter scale, part of which has chipped off. Underneath the the removable slide is a centimeter scale carrying values from 26 to 51.
Signedface, bottom slide, bottom center: KEUFFEL & ESSER Co. NEW-YORK;
bottom of runner: K&E CO. N.Y. / PAT. 8.17.15
Inscribedunder removable slide, top center: PAT. APPD FOR
bottom of runner: K&E Co. N.Y. / PAT. 8.17.15
Curatorial RemarksSimilar in function to 1997-1-1631 and 1997-1-1626.
FunctionFor solving mathematics problems, including multiplication, division, proportions, and trigonometrical calculations.
For details on how to use the slide rule to solve a particular problem, see William Cox's manual, available for download here.
For details on how to use the slide rule to solve a particular problem, see William Cox's manual, available for download here.
ProvenancePrivate Donor, Troy, New York.
Keuffel & Esser Company
Date: circa 1917
Accessories: rectangular black leather case
Object number: 1997-1-1631
Keuffel & Esser Company
Date: circa 1917
Accessories: Brown leather case with flap closure, for storage.
Object number: 1989-1-0012
Keuffel & Esser Company
Date: patented 1900
Accessories: brown leather case, for storage
Object number: 2003-1-0225
Keuffel & Esser Company
Date: patented 1933
Accessories: black leather case with flap closure
Object number: 1997-1-1925
Eugene Dietzgen Company
Date: early 20th-mid 20th Century
Accessories: brown leather case with flap closure and model information printed in gold
Object number: 2003-1-0223
Dennert & Pape
Date: 1936-1939
Accessories: Black leather case, for storage.
Object number: 1997-1-1861
Keuffel & Esser Company
Date: circa 1936
Object number: 1997-1-1626
Ledder & Probst
Date: circa 1915
Object number: 1997-1-1633
See also/See also
