4098A Pocket Slide rule
The 4098A "Pocket Slide Rule" is made of solid celluloid and the scales are engine divided. The scale set is the same as the 4041 Mannehim slide rule
The scale set:
- Front: A = B C = D
- Rear: = S T L =
The rule has inch and centi-meter scales on the rear side.
Brief History:The 4098A first appeared in the 1936 catalog. The 4098A family last appeared in the 1949 catalog.
Catalog Page Links:Links to catalog pages for the 4098A slide rule: