Index of K&E Catalogs Cross Reference Index Index of K&E Collection Index of K&E Manuals
K&E 4013 Thacher's Slide Rules
Collection of pictures:
Type II Thacher 4013 Specimen #1 --- Serial Number 3965 4013 Specimen #2 --- Serial Number 2614 Type III Thacher 4013 Specimen #1 --- Serial Number 5871
Type II Thacher
Type III Thacher