Welcome To The Sphere Research Slide Rule Site !
Visitor SWAP and TRADE Section, see what everybody else has!
* Updated March 21, 2004
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A great source for test equipment, repairs, calibrations, useful metrology information, and of course, SLIDE RULES!
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The Slide Rule Universe reaches everywhere, and provides rules from the USA, Japan, England, China, Germany and France to satisfy your requirements. We also help match up collectors and sellers all over the world, who need a way to list their rules for sale. If you figure YOU belong here, E-Mail Walter, and let us know!

To list an item on the SWAP PAGE: just E-mail your info. Be sure to include the item asking price, model number, maker, condition, your e-mail address, and any interesting features. See the examples below. Please note, we have no direct involvement in these sales or trades, and provide this information as-is, the responsibility for the offerings rests with the seller. We do our best to police these, but caveat emptor!

Listings are at our discretion, there is no charge to list, but we reserve the right to use any pictures furnished in our on-line archive, and you MUST notify us within one week of the item's sale. Sorry, NO LISTINGS from commercial sites, private individuals only, please. If we receive complaints from other users about your listings or dealings, sorry, we will drop your items.
Visitor's Meeting, Sale and Swap Listings

LOOKS LIKE THIS DETAILS
Nestler Lahr 1/b Cursor
CLICK for closer view of the cursor
Click for bigger PIC!

The Whole Rule
CLICK for closer view of the rule
Click for bigger PIC!		 HELP!
I have two rules like this (20 inch Nestler), both with damaged cursors. I need spare glass (top and side) or new cursors. I belive other Nestler 20" models like the 24 will also work to some degree. Happy to buy or swap for replacement parts.

Walter (the guy that maintains this site) is looking for these things, EMAIL HIM if you can help!


CLICK to visit
CLICK to VISIT Dick Rose's Vintage Instrument site in the US. Those of you that have been looking for Dick's lists of slide rules and other vintage instruments can now find them all on line and searchable here at his new web site.
E-mail DickDick Rose has a large collection of K+E, Pickett, POST, Acu-Math, Faber-Castell, Nestler, Sun-Hemmi and other slide rules you can look through, plus calculators, books and planimeters. He will take offers or quote a price on any items that interest you.

An excellent guy to deal with, highly recommended by us.


Paul Ross (of the Post Go to the POST Archive Archive fame) has a site known as The Slide Rule Trading Company. SRTC sells slide rules, of course, but it specializes in slide rule repair parts. If you need a cursor or screw, SRTC is a good place to try. View their web page HERE!
Twice-a-year convention and swap meet
offers hundreds of slide rules for sale. You may inspect each slide rule before you decide to buy (try doing that on the internet!). Conventions are held each spring and fall in the Dallas/Ft.Worth, Texas area. For more information or to reserve a table, contact Skip Solberg at:

E-mail Skip solberg2@airmail.net

Contact Skip for the next convention date!
David Crate has a variety of high end rules for sale, and a local website where he posts his recent finds. We have bought lots of rules from Dave, and his service and quality are great. If you are looking for a premium rule, you may find it here at his NEW SITE at DAVE's PLACE.

Note Dave's new email address: E-mail Dave puppy@amug.org EMAIL Dave if you're interested !

John Porter has many slide rules and related items for sale through his antique business. He is back in Texas, and may be reached by e-mail at this NEW ADDRESS:
E-mail John jporter1@satx.rr.com. Please E-Mail your requests directly to John.

John's Slide Rules for sale are now on his website HERE !

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