FREDRICK POST CO. 1447 SLIDE RULER IN GRAY CASE

FREDRICK POST CO. 1447 SLIDE RULER IN GRAY CASE | VINTAGE COLLECTIBLE SLIDE RULER ENGINEER ARCHITECT ALGEBRA/TRIGONMETRY -PLASTIC GRAY CASE -ITEM 3/3 -HS5621

FREDRICK POST CO. 1447 SLIDE RULER IN GRAY CASE | VINTAGE COLLECTIBLE SLIDE RULER ARCHITECT ALGEBRA/TRIGONMETRY ENGINEER -PLASTIC GRAY CASE -ITEM 2/3 -HS5621

FREDRICK POST CO. 1447 SLIDE RULER IN GRAY CASE | VINTAGE COLLECTIBLE SLIDE RULER ARCHITECT ALGEBRA/TRIGONMETRY PLASTIC GRAY CASE -ITEM 1/3 -HS5621

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

FREDRICK POST CO.,NO 1461,VERSALOG, HEMMI, JAPAN 6" | VINTAGE SLIDE RULER ARCHITECT ALGEBRA LEATHER CASE/TOP GRAIN COWHIDE -GREAT CONDITION -HS5621

FREDRICK POST CO. NO 1460 SLIDE RULE WITH CASE | VINTAGE COLLECTIBLE SLIDE RULER ARCHITECT ALGEBRA/TRIGONMETRY -LEATHER CASE (MONOGRAMMED INNER FLAP) -HS5621

FREDRICK POST CO., NO. 1446-D STUDENT SLIDE RULE | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -RED CASE -HS5721

FREDRICK POST NO. 1444K HEMMI JAPAN SLIDE RULE | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE -HS5721

KEUFFEL AND ESSER CO SLIDE RULER IN LEATHER CASE Vintage slide ruler in leather carrying case made by Keuffel & Co. N.Y. Pat. June 5, 1900 *end of case has detached, name wr

PRESTIGE PRECISION SLIDE RULE EDWARD JOY CO | VINTAGE COLLECTIBLE SLIDE RULER ARCHITECT ALGEBRA/TRIGONMETRY -CASE -HS5621

KEUEFFEL & ESSER CO. 10' SLIDE RULER NO. 4053-3 NY, PAT. 1,934,232 | VINTAGE SLIDE RULER ARCHITECT ALGEBRA/TRIGONMETRY -LEATHER CASE (CONDITION ALIGNS WITH VINTAGE WEAR) -HS5621

In Box with Case and Book.

EUGENE DIETZGEN CO., MICROGLIDE, DECIMAL TRIG TYPE | CAT. NO. 1734 TABLES VINTAGE COLLECTIBLE SLIDE RULER ARCHITECT ALGEBRA/TRIGONMETRY -LEATHER CASE (INSIDE FLAP IS MONOGRAMMED) -GREAT CONDITION -CON

DIWA SLIDE SCALE WITH CASE CARRIER AIR CONDITION NO 601-1 CUSTOMIZED CARRIER AIR CONDITIONING CO SYRACUSE, NY | VINTAGE COLLECTIBLE SLIDE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING TOO

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

EUGENE DIETZGEN CO 10" SLIDE RULE WITH CASE | VINTAGE COLLECTIBLE SLIDE RULE RULER ARCHITECT ALGEBRA TRIGONMETRY ENGINEER TOOL DRAFTING -CONDITION ALIGNS WITH VINTAGE WEAR -CASE -HS5721

VINTAGE DRAFTING TOOLS, FOLDING RULER, SLIDE RULERS, SQUARE SOHACO Southington Hardware Co, on square, K&amp;E leather case for slide rule. 13&quot;<

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

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 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

A Wheatstone Bridge by Leeds & Northrup Co., Philadelphia, 20th Century, and a Slide Wire Resistor, 20th Century. H: 2 1/2 W: 23 3/4 D: 6 1/4 in. Proceeds to benefit the Case Western Reserve Universit

BREITLING NAVITIMER REF. 7808, 70S Three body tonneau stainless steel case, n. 1424129, revolving bidirectional slide-ruler bezel, faceted lugs, snap on back, round pushers and Breitling crown. Not or

Vintage Surveyor's Transit Level, catalog # 3909A, sn 423, made by Wissler, maker's serial number 1146, with engraved mark 'F. Post Co., Chicago, 1146', in a fitted wooden case with accessories and ma