In gathering my collection of slide rules I have not paid much attention to the finer details of scales or construction. As the collection grew bigger I have...
Hello Marion, The real problem with trig scales on the body is not when you solve a right triangle or vectors, but when you have a calculation that involves...
Zvi Doron
zvidoron@...
Jan 1, 2008 9:01 am
34133
Hello Zvi, Excellent point - while the two configurations are equivalent for right angle calculations, they are not for the type of calculation you have...
Hello again Zvi and all others who have contributed to this thread recently. I mentioned in my first message to Zvi how much pleasure I get from my membership...
HEADS UP! There's a K&E Thacher #4013 coming up on ebay (item #300186530358) in about 6 days that should be watched. It's not mint, and it's missing the...
CALL FOR LISTINGS, THE OUGHTRED SOCIETY SWAP SHEET We would like to invite you to place an ad in the swap sheet. NOTE : The swap sheet is much too small now,...
I'm still working on this collection. With your help I've found the B-18 and P4M. Thank you!!! Any further leads on Load Adjusters for sale is greatly...
Not SR - therefore could anyone with knowledge / collecting experience of vintage CASIO calculators make contact with me off the list I would be very grateful....
Zvi Doron
zvidoron@...
Jan 3, 2008 8:59 pm
34140
... Hi, David, Steve, and Zvi: I guess there is not efficient way to solve such problems on either type of slide rule. Zvi, your spherical trig navigation...
Hey, Zvi -- Family first. (Locks down "humor" shift key.) Yeah, life sucks, then you die. Says so in the Bible, somewhere in that set of books sometimes...
I picked up two 720's back in '06 and I think the price was reasonable and I remember the Indian offerings. They have dried up but it seems that, in general,...
The flight to Hartford was uneventful as far as the SR was concerned and time passed quickly. Near the end of the flight a stewardess notice it and said, " I...
My apologies if this has been mentioned before. http://www.hnsa.org/doc/op1140/index.htm The PDF files describe various components of mechanical computers used...
The Oughtred Society Swap Sheet The swap sheet has been updated for January 2008, and is now available for viewing. Go to : www.oughtred.org and on the left...
Someone mentioned to me that when they printed my "kid's rule" slide rule pdf's the slide rule was 15". The slide rule is only around 10". They were printing...
For those with budgets smaller than purchasing a Thacher there are 4 interesting slide rules on ebay: 1: Ultra Rare early 1900's Otis Kings Pocket Calculator,...
See this item #280188499598. This watch had an outer CI scale on the bezel and an inner D scale. Is this unusual or am I misreading something. Or, do other...
Hello ISRG Members, I have an eBay related question. I've noticed that a significant proportion of sellers don't / refuse to ship beyond the borders of the...
Hello John: When you mail a package in the US that is to go outside of the country, you have to fill out a customs form. This is mainly used by the receiving...
Hi John, Shipping outside the U.S. usually requires at least a little extra paperwork and sometimes some special handling that might require an extra trip to...
For a few years I sold film cameras on ebay along with buying SRs. I have a few hundred seller/buyers transactions under my belt and have either purchased or...
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