Conversion slide rule
Conversion slide rule for sale on Ireland's largest auction and classifieds sites
British standards institution - british, - £9.99
Very good condition • Please see photos - Free postage - New and Used
Very good condition • Please see photos - Free postage - New and Used
British standards institution - british, - £16.15
There crack bottom • Left hand corner • Sheet which doesn - Free postage - New and Used
There crack bottom • Left hand corner • Sheet which doesn - Free postage - New and Used
Rare vintage cosmorule series - rare, - £10.00
- Free postage - New and Used
- Free postage - New and Used
Comprehensive circular - comprehensive, - £52.99
White plastic circular • Slide rule rotating • Centre - Free postage - New and Used
White plastic circular • Slide rule rotating • Centre - Free postage - New and Used
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Vintage unique commercial - 'unique', - £12.94
- Free postage - New and Used
- Free postage - New and Used
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48 listings · from £4.21 · avg £22.13
Browse 48 conversion slide rule listings currently in our index. Prices range from £4.21 to £89, with an average of £22.13. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about conversion slide rule →
Vintage unit conversion - vintage, - £16.15
Condition very nice • Age appears unused • Perfect collector - Free postage - New and Used
Condition very nice • Age appears unused • Perfect collector - Free postage - New and Used
British standards institution - british, - £20.00
- Free postage - New and Used
- Free postage - New and Used
Concise conversion tables and - conversion, - £10.64
- Free postage - New and Used
- Free postage - New and Used
Carmart conversion slide rule - carmart, - £10.80
Carmart conversion slide • Rule calculator tool • Calculating converting measurements - Free postage - New and Used
Carmart conversion slide • Rule calculator tool • Calculating converting measurements - Free postage - New and Used
Concise conversion tables and - conversion, - £10.64
- Free postage - New and Used
- Free postage - New and Used
Vtg 50s curtec - curtec, measurement - £13.22
Measurement conversion slide • Vintage 1956 curtec • Rule color red - Free postage - New and Used
Measurement conversion slide • Vintage 1956 curtec • Rule color red - Free postage - New and Used
Cnp slide rule for - rule, - £16.97
- Free postage - New and Used
- Free postage - New and Used
Vintage concise circular slide - vintage, - £17.72
Sama etani boston - Free postage - New and Used
Sama etani boston - Free postage - New and Used
Aviation slide rule oil - aviation, - £29.99
Easy maintenance chemically • Stain resistant effectively • Oil seawater fingerprints - Free postage - New and Used
Easy maintenance chemically • Stain resistant effectively • Oil seawater fingerprints - Free postage - New and Used
Vtg made japan conversion - vtg, - £33.69
View highly detailed • Scans details take • Your own conclusions - Free postage - New and Used
View highly detailed • Scans details take • Your own conclusions - Free postage - New and Used
Vintage tube forging - tube, - £10.64
Vintage tube forging • Welding fittings conversion • Chart slide rule - Free postage - New and Used
Vintage tube forging • Welding fittings conversion • Chart slide rule - Free postage - New and Used
Vintage farmers metric - vintage, - £29.00
Vintage farmers converter • Slide rule sliding • Metric conversion table - Free postage - New and Used
Vintage farmers converter • Slide rule sliding • Metric conversion table - Free postage - New and Used
Aviation slide rule portable - slide, - £20.54
Easy maintenance chemically • Stain resistant effectively • Oil seawater fingerprints - Free postage - New and Used
Easy maintenance chemically • Stain resistant effectively • Oil seawater fingerprints - Free postage - New and Used
Faber s vintage - a.w.faber's, - £12.94
Numbers ruler 355 • Case - Free postage - New and Used
Numbers ruler 355 • Case - Free postage - New and Used
Vintage 1962 aristo slide - 1962, - £47.73
Vintage 1962 aristo • Slide rule case • Conversion table direction - Free postage - New and Used
Vintage 1962 aristo • Slide rule case • Conversion table direction - Free postage - New and Used
1977 metric conversion slide - conversion, - £4.21
Slide rule calculator • 1977 metric conversion • Spencer gifts vintage - Free postage - New and Used
Slide rule calculator • 1977 metric conversion • Spencer gifts vintage - Free postage - New and Used
Vintage unique universal slide - vintage, - £9.48
Vintage unique universal • Slide rule made • England charts tables - Free postage - New and Used
Vintage unique universal • Slide rule made • England charts tables - Free postage - New and Used
Aviation slide rule - aviation, - £18.67
Easy maintenance chemically • Stain resistant effectively • Oil seawater fingerprints - Free postage - New and Used
Easy maintenance chemically • Stain resistant effectively • Oil seawater fingerprints - Free postage - New and Used
Vintage pickett model 903 - pickett, t - £17.69
Vintage pickett model • 903 slide rule • Trig conversion preowned - Free postage - New and Used
Vintage pickett model • 903 slide rule • Trig conversion preowned - Free postage - New and Used
Aviation slide rule - oil, and - £20.48
Easy maintenance chemically • Stain resistant effectively • Oil seawater fingerprints - Free postage - New and Used
Easy maintenance chemically • Stain resistant effectively • Oil seawater fingerprints - Free postage - New and Used
Blundell rules ltd - blundell, british - £16.15
Good clean condition • Few marks white • Plastic windows fairly - Free postage - New and Used
Good clean condition • Few marks white • Plastic windows fairly - Free postage - New and Used
Vintage pickett all metal - vintage, - £30.99
Slide rule • Vintage pickett all • From 1958 rare - Free postage - New and Used
Slide rule • Vintage pickett all • From 1958 rare - Free postage - New and Used
Vintage sama etani - etani, model - £89.00
Black plastic tape • Attached along top • Edge reads matlack - Free postage - New and Used
Black plastic tape • Attached along top • Edge reads matlack - Free postage - New and Used
Cnp slide rule for - slide, - £18.30
- Free postage - New and Used
- Free postage - New and Used
Kcnp flight navigation slide - flight, - £24.80
- Free postage - New and Used
- Free postage - New and Used
Cnp slide rule - cnp-3, - £18.30
- Free postage - New and Used
- Free postage - New and Used
Cnp plastic slide - plastic, for - £16.63
Real color item • May slightly different • From pictures shown - Free postage - New and Used
Real color item • May slightly different • From pictures shown - Free postage - New and Used
Vtg metric conversion slide - vtg, - £13.25
Vtg metric conversion • Slide rule olan • Mills school portrait - Free postage - New and Used
Vtg metric conversion • Slide rule olan • Mills school portrait - Free postage - New and Used
Kcnp professional flight - kcnp-1, - £21.54
Real color item • May slightly different • From pictures shown - Free postage - New and Used
Real color item • May slightly different • From pictures shown - Free postage - New and Used
Concise slide rule - rule, circular - £35.46
Used item that • Previously found sale • Has been - Free postage - New and Used
Used item that • Previously found sale • Has been - Free postage - New and Used
Vintage rca circular - vintage, - £42.56
Decades multiple sites • Dvisions employee slide • Ruler rca areospace - Free postage - New and Used
Decades multiple sites • Dvisions employee slide • Ruler rca areospace - Free postage - New and Used
Vtg central instrument - central, - £34.53
- Free postage - New and Used
- Free postage - New and Used
Fairbanks scales scale - -, & - £11.39
Fairbanks scales scale • Conversion slide rule • Calculator - Free postage - New and Used
Fairbanks scales scale • Conversion slide rule • Calculator - Free postage - New and Used
Kcnp professional flight - kcnp-1, - £25.30
Real color item • May slightly different • From pictures shown - Free postage - New and Used
Real color item • May slightly different • From pictures shown - Free postage - New and Used
Kcnp professional flight - professional, - £24.80
Real color item • May slightly different • From pictures shown - Free postage - New and Used
Real color item • May slightly different • From pictures shown - Free postage - New and Used
Vintage 1965 time saver - time, - £25.71
Design standard hole • Punch easy insertion • Into school binder - Free postage - New and Used
Design standard hole • Punch easy insertion • Into school binder - Free postage - New and Used
Aviation slide rule - slide, - £20.54
Easy maintenance chemically • Stain resistant effectively • Oil seawater fingerprints - Free postage - New and Used
Easy maintenance chemically • Stain resistant effectively • Oil seawater fingerprints - Free postage - New and Used
Vintage united states air - vintage, - £5.32
Mint condition appears • Not have been • Used - Free postage - New and Used
Mint condition appears • Not have been • Used - Free postage - New and Used
Vintage lietz 2975 slide - 2975, - £15.03
This slide rule • Scarce original vintage • Plastic sleeve labelled - Free postage - New and Used
This slide rule • Scarce original vintage • Plastic sleeve labelled - Free postage - New and Used
Stokes corp vacuum - corp, - £57.63
See photos condition - Free postage - New and Used
See photos condition - Free postage - New and Used
Vtg 1965 westinghouse - 1965, - £12.41
Westinghouse electric corporation • Motor gearing division • Buffalo nema designs - Free postage - New and Used
Westinghouse electric corporation • Motor gearing division • Buffalo nema designs - Free postage - New and Used
Flight slide rule angle - rule, - £13.31
Real color item • May slightly different • From pictures shown - Free postage - New and Used
Real color item • May slightly different • From pictures shown - Free postage - New and Used
Cnp flight navigation - flight, - £15.91
- Free postage - New and Used
- Free postage - New and Used
Try this: whirling hygrometer | cowley automatic level
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Everything you need to know about conversion slide rule
Whether you are looking for a brand-new or second-hand conversion slide rule, eBay offers one of the largest selections available online. With 48 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £4.21, while premium listings can reach £89 — giving you a wide budget spread to work with. The average price of £22.13 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.