E.M. Scofield: The Engineers Slide Rule

The Engineers Slide Rule, made in USA by E. M. Scofield, Bridge Engineer, Youngstown, Ohio. Patent 1901-1902. Comprised of paper scales on boxwood. 24" L x 2" W x 1/2" D. Provenance: Private West Tenn

1st item: Eckel Dial-O-Matic Engineer's or Engineer's Log Log slide rule, manufactured by Lithocalculator Company, Arcadia, California, circa 1955. Comprised of two celluloid-coated aluminum disks, on

RELAY, NO. 82 SLIDERULE | VINTAGE ENGINEER SLIDE RULER WITH RED/BLACK CASE NOSTALGIC ALGEBRA -hs5621

UNIQUE UNIVERSAL SLIDE RULE MADE IN ENGLAND | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -NO CASE -HS5721

PICKETT DIAL RULE CIRCULAR SLIDE RULE 101-C WITH CASE AND BOOKLET | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE

THE BINARY CIRCULAR SLIDE RULE COPYRIGHTED 1931,1940 WITH BOOKLET | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE

PC SLIDE RULE 6A WITH CASE | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -GREEN CASE -HS5721

J. HEMMI SUN PATENT NO. 22129 WITH CASE SLIDE RULE BRITISH PATENT 107562, BREVETTE S.G.D.G, 6" | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CASE (POOR Q

PICKETT MODEL 803-T SLIDING RULE WITH CASE SYCHRO-SCALE LOG LOG | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE -H

JASON NO 802 SLIDE RULE WITH CASE | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -BROWN LEATHER CASE -HS5721

BRUNING, CHARLES BRUNING COMPANY CAT NO 2398 RULE | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE -HS5721

PICKETT 244 MODEL N3-T LOG LOG SPEED RULE | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -NO CASE -HS5721

DIETZGEN SLIDE RULE 6" WITH LEATHER CASE U.S.A. | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE -HS5721

JOHN RABONE & SONS, WARRANTED, BRASS HINGE BEST BOX, WOODED | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -HS5721

THE ORGINAL DRAFSMAN ROLLING RULER NIB | VINTAGE COLLECTIBLE ROLLING SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING PARALLEL PANTOGRAPH -CONDITION ALIGNS WITH VINTAGE WEAR -BOXE

KEUFFEL & ESSER CO NO. 461294 PAT. APRIL 1'24 | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -DAMAGED CASE (SEE IMAGES)

KEUFFEL & ESSER CO NO. 4053-3 BOX CASE BOOKLETS POLYPHASE | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -GREAT GREEN L

PICKETT, MODEL N600-T LOG LOG SPEED RULE 6" | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING SYNCHRO SCALE -CONDITION ALIGNS WITH VINTAGE WEAR -LEATHER CASE

KEUFFEL & ESSER CO 4081-3 LOG LOG DEPLUX DECITIRIG WITH CASE PATS; 2500460, 2168056,2170144,2285722, 2422649 | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING

| VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -BLACK CASE -HS5721

LAWRENCE ENGINNERING SERVICES SLIDE RULE PERU INNDIANA SLIDE RULE WITH CASE MODEL 10-B | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WIT

KEUFFEL & ESSER CO 4081-3 LOG LOG DEPLUX DECITIRIG WITH CASE PATS; 2500460, 2168056,2170144,2285722, 2422649 | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING

KEUFFEL & ESSER CO 4061 6" | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE (DAMAGED) -HS5721

LAWRENCE ENGINEERING SERVICE SLIDE RULE PERU INDIANA 10-B WOODEN | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -SLEEVE