- $207.00 Antique Kelvin Hughes 24" Brass Parallel Ruler Nautical Navigation Tool in Box
- $382.50 Rare vintage E.R.WATTS & SON Parallel Rules London year 1943 (WWII).
- $299.99 Antique Kelvin & Hughes 24" Brass Parallel Ruler Nautical Navigation Tool in Box
- $64.50 Brass Rolling Ruler, U.W.W. Makers Birmingham With Wood Case - 18" Long
- $38.99 Vintage Maclean Parallel Lucite Ruler 21" Perspex
- $119.95 Brass Rolling Ruler, U.W.W. Makers Birmingham, Navigation, Engineering, 18" L
- $175.00 NEGUS Antique Parallel Ruler In Box
- $199.99 Antique Kelvin Hughes 24" Brass Parallel Ruler Nautical Navigation Tool in Box
- $149.00 Paralel ruler in wooden box vintage with wooden handle and brass rollers
- $79.97 RARE Ebony Capt Field's Improved Parallel, Made in England, Black w/White Letter