Circular slide rule
Circular slide rule for sale on Ireland's largest auction and classifieds sites
Vintage concise 28 - vintage, - £26.70
Model concise circular • Slide rule design • Clear rotating plastic - Free postage - New and Used
Model concise circular • Slide rule design • Clear rotating plastic - Free postage - New and Used
Halden calculex vintage - calculex, - £20.00
Vintage halden circular • Slide rule complete • Its original leather - Free postage - New and Used
Vintage halden circular • Slide rule complete • Its original leather - Free postage - New and Used
Vintage soviet circular - soviet, kl-1 - £29.82
This afascinating piece • Soviet era engineering • Circular logarithmic slide - Free postage - New and Used
This afascinating piece • Soviet era engineering • Circular logarithmic slide - Free postage - New and Used
Vintage concise circular slide - concise, - £29.99
This vintage concise • Circular slide rule • Made japan takeda - Free postage - New and Used
This vintage concise • Circular slide rule • Made japan takeda - Free postage - New and Used
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Circular slide rule tarquin - circular, - £9.73
Circular slide rule • Simple elegant scientific • Instrument originating from - Free postage - New and Used
Circular slide rule • Simple elegant scientific • Instrument originating from - Free postage - New and Used
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48 listings · from £9.73 · avg £29.75
Browse 48 circular slide rule listings currently in our index. Prices range from £9.73 to £89.1, with an average of £29.75. 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 circular slide rule →
Made japan 5cm diameter - made, - £21.50
Original packaging never • Used only removed • From sleeves photos - Free postage - New and Used
Original packaging never • Used only removed • From sleeves photos - Free postage - New and Used
Fearns mear vintage circular - &, - £25.00
This slide rule • Fearns mear vintage • Calculator rare sought - Free postage - New and Used
This slide rule • Fearns mear vintage • Calculator rare sought - Free postage - New and Used
Norma grafia 100 circular - norma, - £31.20
146d 245 grafia • 100 complete pouch • Und instruction book - Free postage - New and Used
146d 245 grafia • 100 complete pouch • Und instruction book - Free postage - New and Used
Vintage meat co circular - vintage, - £25.00
Vintage meat circular • Slide rule rare • Unique tool used - Free postage - New and Used
Vintage meat circular • Slide rule rare • Unique tool used - Free postage - New and Used
The halden calculex circular - the, "halden - £89.10
Halden calculex circular • Slide rule vintage • Good condition instruction - Free postage - New and Used
Halden calculex circular • Slide rule vintage • Good condition instruction - Free postage - New and Used
Mear co circular slide - co, - £21.50
Produced mid late • 20th century these • Circular slide rules - Free postage - New and Used
Produced mid late • 20th century these • Circular slide rules - Free postage - New and Used
Average friction value - friction, - £20.00
Part number gmc63065 • Circular slide rule • New unused great - Free postage - New and Used
Part number gmc63065 • Circular slide rule • New unused great - Free postage - New and Used
Vintage lockheed rigid - rigid, rotor - £19.42
Are offering your • Consideration vintage lockheed • Rigid rotor circular - Free postage - New and Used
Are offering your • Consideration vintage lockheed • Rigid rotor circular - Free postage - New and Used
Vintage circular slide rule - slide, - £26.70
Vintage slide rule • Calculator made japan • Housed leather case - Free postage - New and Used
Vintage slide rule • Calculator made japan • Housed leather case - Free postage - New and Used
Concise ruler circular - concise, - £33.14
All product manuals • Are japanese expedited • Ems - Free postage - New and Used
All product manuals • Are japanese expedited • Ems - Free postage - New and Used
Rare vintage stanley stay - vintage, rule - £12.30
Found this rule • When sorting through • Late father tools - Free postage - New and Used
Found this rule • When sorting through • Late father tools - Free postage - New and Used
Concise ruler 28n english - concise, - £24.10
- Free postage - New and Used
- Free postage - New and Used
Concise circular slide - concise, - £38.45
Circular slide rule • 300 100829 highly • Versatile japanese made - Free postage - New and Used
Circular slide rule • 300 100829 highly • Versatile japanese made - Free postage - New and Used
Vintage binary circular - binary, - £26.44
Item pre owned • Normal wear tear • Shown photos exact - Free postage - New and Used
Item pre owned • Normal wear tear • Shown photos exact - Free postage - New and Used
Concise ruler 28n english - ruler, - £29.09
This most popular • Circular slide rule • That can easily - Free postage - New and Used
This most popular • Circular slide rule • That can easily - Free postage - New and Used
Concise circular slide rule - circular, - £30.24
This concise 270n • Circular slide rule • Allows wide range - Free postage - New and Used
This concise 270n • Circular slide rule • Allows wide range - Free postage - New and Used
Vtg 1931 1940 - 1931/1940, slide - £44.08
Look all pictures • Examples wear condition - Free postage - New and Used
Look all pictures • Examples wear condition - Free postage - New and Used
Airtour crp computer - (refjoh6), - £19.99
Refjoh6 airtour crp • Computer handbook circular • Slide rule pooley - Free postage - New and Used
Refjoh6 airtour crp • Computer handbook circular • Slide rule pooley - Free postage - New and Used
Concise ruler circular - ruler, - £44.46
Concise ruler circular • Slide rule 300 • Precision tool perfect - Free postage - New and Used
Concise ruler circular • Slide rule 300 • Precision tool perfect - Free postage - New and Used
Vintage pocket sized - vintage, circular - £19.16
Vintage pocket sized • Circular slide rule • From space age - Free postage - New and Used
Vintage pocket sized • Circular slide rule • From space age - Free postage - New and Used
Vtg 1968 sama etani - sama, - £31.37
Vtg 1968 sama • Etani 600 concise • Science tables circular - Free postage - New and Used
Vtg 1968 sama • Etani 600 concise • Science tables circular - Free postage - New and Used
New concise ruler circular - new, - £17.75
Slide rule • 27n english version • Most popular circular - Free postage - New and Used
Slide rule • 27n english version • Most popular circular - Free postage - New and Used
Engineer logarithmic - engineer, - £35.73
Model belongs family • Soviet circular slide • Logarithmic ruler unlike - Free postage - New and Used
Model belongs family • Soviet circular slide • Logarithmic ruler unlike - Free postage - New and Used
Rare vintage slide - vintage, analog - £42.79
- Free postage - New and Used
- Free postage - New and Used
Ussr circular log slide - kl-1, - £46.79
Circular logarithmic ruler • Perform slide rule • Log you can - Free postage - New and Used
Circular logarithmic ruler • Perform slide rule • Log you can - 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
Concise 260 circular - no., - £30.90
Concise 260 circular • Slide rule made • Japan takeda caterpillar - Free postage - New and Used
Concise 260 circular • Slide rule made • Japan takeda caterpillar - Free postage - New and Used
1965 time saver circular - 1965, - £20.09
Originally quick reference • Math conversion tool • Now makes great - Free postage - New and Used
Originally quick reference • Math conversion tool • Now makes great - Free postage - New and Used
Concise 320 circular - concise, - £22.95
Nice concise slide • Rule add your • Collection daily tool - Free postage - New and Used
Nice concise slide • Rule add your • Collection daily tool - Free postage - New and Used
Concise conversion tables and - conversion, - £17.61
Concise conversion tables • Circular slide rule • Model 112 carried - Free postage - New and Used
Concise conversion tables • Circular slide rule • Model 112 carried - Free postage - New and Used
Vintage fearns calculator cj - fearns, - £16.15
Vintage fearns calculator • Buildings contract journal • Metric imperial converter - Free postage - New and Used
Vintage fearns calculator • Buildings contract journal • Metric imperial converter - Free postage - New and Used
Concise circular slide - concise, rule - £31.79
Authentic jdm parts • Get genuine quality • Japanese products direct - Free postage - New and Used
Authentic jdm parts • Get genuine quality • Japanese products direct - Free postage - New and Used
Vintage all bright - vintage, all-bright - £13.23
This plastic circular • Rule features multiple • Printed scales includingk - Free postage - New and Used
This plastic circular • Rule features multiple • Printed scales includingk - Free postage - New and Used
Concise ruler circular slide - ruler, - £47.18
Most popular circular • Slide rule can • Used calculations other - Free postage - New and Used
Most popular circular • Slide rule can • Used calculations other - Free postage - New and Used
Circular slide rule e6b used - circular, - £12.86
E6b flight computer • Form circular slide • Rule used aviation - Free postage - New and Used
E6b flight computer • Form circular slide • Rule used aviation - Free postage - New and Used
Vtg concise circular slide - vtg, - £30.90
Vtg concise circular • Slide rule sama • Etani inc monsanto - Free postage - New and Used
Vtg concise circular • Slide rule sama • Etani inc monsanto - Free postage - New and Used
Concise ruler circular slide - ruler, - £29.19
All product manuals • Are japanese expedited • Ems - Free postage - New and Used
All product manuals • Are japanese expedited • Ems - Free postage - New and Used
Vintage soviet calories - soviet, - £23.84
Made ussr 1989 • Materials calculator plastic • Aluminum cover leatherette - Free postage - New and Used
Made ussr 1989 • Materials calculator plastic • Aluminum cover leatherette - Free postage - New and Used
Logarithmic ruler round - logarithmic, kl-1 - £61.80
Logarithmic ruler round • Lineup calculator slide • Rule rare collectible - Free postage - New and Used
Logarithmic ruler round • Lineup calculator slide • Rule rare collectible - Free postage - New and Used
Vintage fearns calculator cj - vintage, - £21.50
- Free postage - New and Used
- Free postage - New and Used
Canadair limited pouched - canadair, - £25.87
- Free postage - New and Used
- Free postage - New and Used
Concise 100843 ruler - 100843, - £36.10
Circular slide rule • 300 100829 made • Japan 110mm new - Free postage - New and Used
Circular slide rule • 300 100829 made • Japan 110mm new - Free postage - New and Used
Concise 100843 ruler circular - concise, - £41.48
Slide rule engineers • That can calculate • Weight shape plate - Free postage - New and Used
Slide rule engineers • That can calculate • Weight shape plate - Free postage - New and Used
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Everything you need to know about circular slide rule
Whether you are looking for a brand-new or second-hand circular 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 £9.73, while premium listings can reach £89.1 — giving you a wide budget spread to work with. The average price of £29.75 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.