- $29.95 Vintage C-Thru Ruler Co, Conn, USA Black Bakelite Parallel Rule Ruler 12" #CL69
- $29.01 Vtg Mayline 15" Navigation Parallel Ruler Drafting Tool Sheboygen, WI. USA
- $47.08 Antique Brass KEUFFEL & ESSER Co. 1758 Rolling Straight Edge Navigation Drafting
- $19.99 Vtg Mayline Navigation Parallel Ruler Drafting Tool Sheboygen, WI. USA
- $19.99 Vtg Mayline 12" Navigation Parallel Ruler Drafting Tool Clear Sheboygen, WI USA
- $12.99 Maritime Navigation PARAGLIDE Protractor Plotter # 1450 P-71 C-THRU WITH MANUAL
- $99.99 Vintage Hinged Parallel Ruler Nautical Brass Made In Great Britain
- $33.08 Marine Parallel Ruler With Clear Scales Mapping Points To Pull Parallel Ruler 45
- $35.00 Nice VINTAGE ESCO T-Square Black Drafting Drawing Tool Bakelite D10
- $15.00 Lucite C-thru Parallel Ruler for Map Navigation aid vintage USA make
- $99.99 Vintage W. H. Van Gaasbeek for Kelvin White Co. 18” Brass Parallel Rule w/ Case
- $29.95 Weems & Plath Marine Navigation Parallel Ruler #141 (Aluminum Arms, 15-Inch)