- $284.23 CAD Antique Kelvin Hughes 24" Brass Parallel Ruler Nautical Navigation Tool in Box
- $52.83 CAD High-Quality 12-Inch Parallel Ruler Bar 6mm Thickness for Accurate Straight Line
- $53.55 CAD High-Quality 12-Inch Parallel Ruler Bar 6mm Thickness for Accurate Straight Line
- $684.72 CAD Military. 1930 US NAVY TECHNICOLOR MOTION PICTURE CORP SURVEY TRANSIT
- $165.00 CAD Brass Rolling Ruler, U.W.W. Makers Birmingham, Navigation, Engineering, 18" L
- $27.45 CAD Vtg Mayline 12" Navigation Parallel Ruler Drafting Tool Clear Sheboygen, WI USA
- $53.54 CAD Vintage Maclean Parallel Lucite Ruler 21" Perspex
- $34.31 CAD C-Thru Ruler Company Protector P-7 Plotter Combination 4" x 15"
- $137.30 CAD Vintage Hinged Parallel Ruler Nautical Brass Made In Great Britain
- $88.56 CAD Brass Rolling Ruler, U.W.W. Makers Birmingham With Wood Case - 18" Long
- $411.92 CAD Antique Kelvin & Hughes 24" Brass Parallel Ruler Nautical Navigation Tool in Box
- $27.45 CAD Vtg Mayline Navigation Parallel Ruler Drafting Tool Sheboygen, WI. USA
- $20.60 CAD Lucite C-thru Parallel Ruler for Map Navigation aid vintage USA make
- $82.37 CAD Vintage 1950s Soviet Russia USSR Maritime NAVY Navigator Parallel Rules
- $525.21 CAD Rare vintage E.R.WATTS & SON Parallel Rules London year 1943 (WWII).
- $20.58 CAD Vintage Set of Staedtler Mars 57140 A,B,C Drawing Curves
- $39.83 CAD Vtg Mayline 15" Navigation Parallel Ruler Drafting Tool Sheboygen, WI. USA
- $137.30 CAD Vintage W. H. Van Gaasbeek for Kelvin White Co. 18” Brass Parallel Rule w/ Case
- $48.06 CAD Nice VINTAGE ESCO T-Square Black Drafting Drawing Tool Bakelite D10
- $204.59 CAD Paralel ruler in wooden box vintage with wooden handle and brass rollers
- $274.61 CAD Antique Kelvin Hughes 24" Brass Parallel Ruler Nautical Navigation Tool in Box
- $54.92 CAD Vtg. Mayline Naval Navigation Drafting parallel Ruler Sheboygan, Wis. 18 in.
- $109.85 CAD Vintage Kenyon Model 28-2000 Rolling Parallel 14" Rule With Wood Case