Antiques (US) 
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$99.99
US Marine Inst Co Parallel Rule
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$49.99
Vintage Kelvin & Hughes Hinged Parallel Nautical Brass Ruler Made Great Britain
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$172.50
Antique Kelvin Hughes 24" Brass Parallel Ruler Nautical Navigation Tool in Box
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$498.67
Military. 1930 US NAVY TECHNICOLOR MOTION PICTURE CORP SURVEY TRANSIT
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$16.89
RARE EBONY KELVIN, BOTTOMLY & BAIRD "CAPTAIN FIELD’S IMPROVED" PARALLEL RULER
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$39.95
Vintage Ebony & Brass 18" Parallel Rule Navigational
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$99.99
Vintage W. H. Van Gaasbeek for Kelvin White Co. 18” Brass Parallel Rule w/ Case
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$122.07
Brass Rolling Ruler, U.W.W. Makers Birmingham, Navigation, Engineering, 18" L
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$24.99
VINTAGE ESCO NAVIGATION PARALLEL RULER 18” HUGE Black Drafting Drawing Tool
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$66.92
Antique Navigation Parallel Rule Stanley London British Made small 6.25 inches
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$12.44
Weems & Plath Marine Navigation 15" Parallel Rulers w/o Protractor Scales #145
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$14.99
Linex A 1715 M Vintage Maritime Marine Parallel Ruler Acrylic Made In Denmark
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$17.99
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450Ms
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$22.01
Parallel Ruler Bar 12" Inches 6 mm Thickness High Quality Line Accurate Tool
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$38.38
Parallel Ruler Navigation Instrument Ruler With Wooden Box 21'' Accurate Tool
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$16.29
Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450MM, N R7K5
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$299.99
Antique Kelvin & Hughes 24" Brass Parallel Ruler Nautical Navigation Tool in Box
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$38.99
Vintage Maclean Parallel Lucite Ruler 21" Perspex
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$9.00
C-Thru Ruler Company Protector P-72 Plotter Combination 4" x 15"
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$29.01
Vtg Mayline 15" Navigation Parallel Ruler Drafting Tool Sheboygen, WI. USA
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$15.00
Lucite C-thru Parallel Ruler for Map Navigation aid vintage USA make
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$22.00
Mayline Naval Navigation Parallel Ruler Drafting Tool Sheboygen, WI 18"
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$99.99
Vintage Hinged Parallel Ruler Nautical Brass Made In Great Britain
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$175.00
NEGUS Antique Parallel Ruler In Box
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$30.00
MARINE NAVIGATION PARALLEL RULER 450 MM BRASS DIVIDERS
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$9.89
Stanley London 2in Ruler
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$170.00
Antique Large Brass Nautical Instrument by Bliss New York C 19th
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$49.99
PARALLEL RULERS
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$57.41
Parallel Ruler Brass Divider Pencil Compass Wooden Box Navigation Instrument
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$9.30
1981 Harry Golub Nautical Plastic Ruler, Nautac
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$19.99
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450MM
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$42.74
SURVEYING UNIVERSAL MINI DRAFTER BOARD MASTER DRAFTING ARM ENGG INSTRUMENTS
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$89.99
T.S. and J.D. Negus Antique Brass Maritime Navigational Parallel Rule Red Felt
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$18.99
Vintage C-Thru Ruler Co. Conn. USA clear Parallel Rule 12" Drafting Marine #51
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$69.95
Antique Brass Parallel Rule Nautical Navigation Instrument T. S. & J. D. Negus
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$269.99
Vintage WWII British Navy Brass Parallel Rolling Rule &box Maritime Naval 106100
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$39.00
Vintage ESCO Parallel Ruler for Navigation 15" Original Box
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$149.00
Paralel ruler in wooden box vintage with wooden handle and brass rollers
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$28.56
Parallel Ruler Bar 12" Inches 6 mm Thickness High Quality Line Accurate Tool
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$40.84
SURVEYING UNIVERSAL MINI DRAFTER BOARD MASTER DRAFTING ARM ENGG INSTRUMENTS
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$24.00
Vintage Weeks & Path Marine Navigation Parallel Ruler #142 15 Inches
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$35.00
Vintage SKALA PARALLEL RULE RULES RULER 17.75" with CASE Marine Navigation CLEAR
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$29.95
Vintage C-Thru Ruler Co, Conn, USA Black Bakelite Parallel Rule Ruler 12" #CL69
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$425.00
Rare vintage E.R.WATTS & SON Parallel Rules London year 1943 (WWII).
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$40.00
Vtg. Mayline Naval Navigation Drafting parallel Ruler Sheboygan, Wis. 18 in.
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$24.99
C-Thru Ruler Company Protector P-7 Plotter Combination 4" x 15"
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$165.00
Vintage US Brass Parallel Rule
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$17.95
1981 Harry Golub Nautical Plastic Ruler, Nautac
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$19.95
Vintage Weems and Plath Protractor Scale
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$70.00
Maritime navigation brass rolling ruler
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$40.00
Early 1850s Parallel Rule, Elliott Brothers, 56 Strand, London
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$19.99
Weems & Plath Marine Navigation Parallel Ruler W/o Protractor Markings (15 Inch)
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$25.00
Weems and Plath Rolling Parallel Plotter
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$12.99
Maritime Navigation PARAGLIDE Protractor Plotter # 1450 P-71 C-THRU WITH MANUAL
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$29.95
Weems & Plath Marine Navigation Parallel Ruler #141 (Aluminum Arms, 15-Inch)
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$21.99
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450MM,
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$78.98
Weems & Plath Marine Navigation Parallel Ruler (Brass Arms, 15-Inch)
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$58.89
Weems Navigation Protractor
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$33.83
2X Marine Ruler Parallel Ruler Nautical Charts Parallel Ruler Mapping Point D9R2
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$14.99
Vintage Set of Staedtler Mars 57140 A,B,C Drawing Curves
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$29.74
Jewelry Clip Vise Holder Jewel Tool on Base
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$34.19
Parallel Ruler Navigation Instrument Ruler With cover 21'' Accurate Tool
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$12.50
Doctor Antique Paralllel Rule Appreciation Diploma
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$24.69
High-Quality 12-Inch Parallel Ruler Bar 6mm Thickness for Accurate Straight Line
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$120.00
Antique CAP'T FIELD'S IMPROVED Nautical Drafting Parallel Rule Ship Boat Measure
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$47.53
Weems & Plath Marine Navigation Parallel Ruler Without Protractor Markings (1...
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$35.99
2X(Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 4h
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$33.99
Jewelry Clip Vise Holder w Magnifier Jewel Tool on Base
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$80.00
Vintage Kenyon Model 28-2000 Rolling Parallel 14" Rule With Wood Case
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$47.55
Simple folding rule. 20th century Simple folding Metro
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$51.99
3X(Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450
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$20.99
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 4rm
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$20.70
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 4 A1F3
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$19.99
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 45 US
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$20.89
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 4 S3R8
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$20.99
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450Mh
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$20.99
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450MM
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$18.95
1X(Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450
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$18.95
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450MM,
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$20.99
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450Mh
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$20.29
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 4 L3I9
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$20.99
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450Mh
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$20.17
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 4 Y3R1
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$20.86
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450MM
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$20.99
1X(Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450
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$20.99
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450 US
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$19.84
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450Mh
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$35.99
2X(Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450
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$20.86
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450MZ5
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$20.99
Marine Parallel Ruler Clear Scales, Mapping Points to Pull Parallel Ruler 450MM,
