|Name and Model Number||Keuffel & Esser 4110 |
|Country of Origin||USA|
|Date of Manufacture||1941|
|Front Scales||P, F, A [ B, T, S, CI, C ] D|
|Scale Length||13.125" (33.4 cm)|
|Type of Rule||Slide Rule|
|Construction||Celluloid on mahogany|
|Area of Use||Generic|
|Comment||Special issue slide rule.
C and D scales are two cycles and A & D scales are four cycles.
P scale is used to find powers of numbers greater than 1 and
F scale is used to find powers of fractions less than 1.
Serial No. 800008
|Donor||Collection of Dr. Paul J. Tarantolo Jr.|
(Click Picture for Details)
|In conjunction with our 'donors' we assign a rarity rating to each item, based on the system devised by Herman van Herwijnen|
|(1929 - 2004), renowned Dutch collector, author, and creator of Herman's Archive, a collection of 5,000 slide rule images on CD.|
|• RR = Rare - 1 of 25 collectors has one; it may take a year to find an example in the marketplace.|
|• RRR = Very Rare - only a few known to collectors; may be several years before it comes up for sale.|
|• RRRR = Extremely Rare - a museum piece; unlikely that an example will come up for sale.|