last data update: 2011/10/15, 06:49

Website loading time

during the test: 0.86 s

cable connection (average): 0.91 s

DSL connection (average): 0.96 s

modem (average): 3.48 s

HTTP headers

Information about DNS servers

sliderule.caA69.27.114.7IN300
sliderule.caMX30sliderule.caIN300
sliderule.caSOAns1.blacksun.caadmin.blacksun.ca200405050110800 3600 604800 300 IN 2560
sliderule.caNSns1.blacksun.caIN300
sliderule.caNSns2.blacksun.caIN300

Received from the first DNS server

Request to the server "sliderule.ca"
You used the following DNS server:
DNS Name: ns1.blacksun.ca
DNS Server Address: 69.27.96.2#53
DNS server aliases:

HEADER opcode: REQUEST, status: NOERROR, id: 52252
flag: qr aa rd REQUEST: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 6

REQUEST SECTION:
sliderule.ca. IN ANY

ANSWER SECTION:
sliderule.ca. 2560 IN SOA ns1.blacksun.ca. admin.blacksun.ca. 2004050501 10800 3600 604800 300
sliderule.ca. 300 IN NS ns1.blacksun.ca.
sliderule.ca. 300 IN NS ns2.blacksun.ca.
sliderule.ca. 300 IN MX 30 sliderule.ca.
sliderule.ca. 300 IN A 69.27.114.7

SECTION NOTES:
ns1.blacksun.ca. 300 IN A 69.27.96.2
ns1.blacksun.ca. 300 IN A 69.27.96.2
ns1.blacksun.ca. 300 IN A 69.27.96.2
ns2.blacksun.ca. 300 IN A 69.27.96.3
ns2.blacksun.ca. 300 IN A 69.27.96.3
ns2.blacksun.ca. 300 IN A 69.27.96.3

Received 245 bytes from address 69.27.96.2#53 in 95 ms

Received from the second DNS server

Request to the server "sliderule.ca"
You used the following DNS server:
DNS Name: ns2.blacksun.ca
DNS Server Address: 69.27.96.3#53
DNS server aliases:

HEADER opcode: REQUEST, status: NOERROR, id: 52518
flag: qr aa rd REQUEST: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 6

REQUEST SECTION:
sliderule.ca. IN ANY

ANSWER SECTION:
sliderule.ca. 2560 IN SOA ns1.blacksun.ca. admin.blacksun.ca. 2004050501 10800 3600 604800 300
sliderule.ca. 300 IN NS ns1.blacksun.ca.
sliderule.ca. 300 IN NS ns2.blacksun.ca.
sliderule.ca. 300 IN MX 30 sliderule.ca.
sliderule.ca. 300 IN A 69.27.114.7

SECTION NOTES:
ns1.blacksun.ca. 300 IN A 69.27.96.2
ns1.blacksun.ca. 300 IN A 69.27.96.2
ns1.blacksun.ca. 300 IN A 69.27.96.2
ns2.blacksun.ca. 300 IN A 69.27.96.3
ns2.blacksun.ca. 300 IN A 69.27.96.3
ns2.blacksun.ca. 300 IN A 69.27.96.3

Received 245 bytes from address 69.27.96.3#53 in 96 ms

Subdomains (the first 50)

Typos (misspells)

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Location

IP: 69.27.114.7

continent: NA, country: Canada (CAN), city: Saskatoon

Website value

rank in the traffic statistics:

There is not enough data to estimate website value.

Basic information

website build without CSS

code weight: 18.37 KB

text per all code ratio: 36 %

title: Eric's Slide Rule Site

description: Personal collection of slide rules, along with various resources including general background information, manuals, books, restroration tips, links and more.

keywords: slide rule, slide rules, sliderule, slide ruler, K&E, K+E, keuffel, esser, keuffel & esser, pickett, post, sun, hemmi, hughes owens, geotec, nestler, faber castell, concise, eco bra, nestler, staedtler, mannheim, oughtred, logarithm

encoding: ASCII

language: en

Website code analysis

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2002) Slide4
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three word phrases repeated minimum three times

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2002) Slide Rule4
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B tags

Welcome to

Eric's Slide Rule Site

Looking for flashlight reviews? Please see my Flashlight Reviews site.

Special Feature - The Evolution of a Slide Rule Features the major design changes the K&E 4053

19 uniquely different models

Slide Rule Collection Dietzgen 1732 Maniphase Multiplex 1733 Polymath 1735 Maniphase Multiplex 1738 Multiphase 1779 Pocketlog Faber Castell 2/82 Duplex 1/54 Darmstadt 57/87 Rietz 375 Unknown model (360?), ca. 1900 Hemmi Hughes Owens 1777 Versalog Hughes Owens 1776 Versatrig Hughes Owens 1773 Hughes Owens 1771 (several versions) Hughes Owens 1768C Hughes Owens 1765 Hughes Owens 1763 Hughes Owens/Geotec 341 3050 Pocket Versalog Hughes Owens/Geotec 341 3120 Versatrig Hughes Owens/Geotec 341 3425 Hemmi 130W Darmstadt Post 1441 Keuffel and Esser 4053-3 (several versions) 4058W 4080-3 4081-3 (several versions) 4083-3 (several versions) 4088-3 4091-3 4092-3 4100 Stadia Nestler Nr. 0130 Multimath-Duplex Nr. 0210 Darmstadt Nr. 0292 Multimath-Duplex Pickett Model 4 N4-ES (several versions) N515-T Electronics Rule N600-ES Speed Rule N1010-ES Microline 140C-T Microline 160C-ES/T Miscellaneous Linear Rules Aristo Studio Nr. 0968 Ecobra 1461 Engineering Instruments 10-B Kutsuwa 1004 Lawrence Engineering 8-B Lutz No. 252 Russian Rule, 1969 Russian Rule, 1978 Staedtler 544 28 Sterling/Acumath 400 Sterling/Precision (unnumbered) Circular and Combination Slide Rules ALCO Addiator with Slide Rule ASA E6-B Flight Computer Concise No. 28 Circular Rule Concise No. 300 Circular Rule Otis King Model L Cylindrical Rule Sterling Silver Tie Clip Slide Rule-related Paraphernalia Aristo ruler Nr. 1369 Dietzgen surveyor's hand level Hughes Owens ruler 324-1125 Why Collect Slide Rules? I suppose it does require some comment. In the history of the modern world, probably no other technological instrument was so widely used for so long, only to disappear virtually overnight. The slide rule's form and features were revised for centuries, and there are probably few people today over the age of 50 who didn't routinely use one in school or at work at some point in their lives. Yet with the advent of inexpensive pocket calculators in the early 1970s, slide rules quickly went the way of the Dodo. What's all the more remarkable is that today it is possible to pick up 140+ function scientific calculators for as little as $5! For me, I guess slide rules carry with them a sense of nostalgia for earlier scientific times. When you use one, you get a much better feel for what numbers really mean than when you use a calculator or computer. They are remarkable technological instruments, built with precision and reliability in mind, and are as useable today as the day they were first made. Many are also intrinsically beautiful, with their celluloid covered wood, metal-framed glass cursors, and richly coloured leather cases. I didn't set out to collect slide rules ... but I find their incredible diversity and functionality amazing and intriguing. If you're reading these pages, then maybe you do too, and so no other explanation is required. In any case, I hope you enjoy the site! If you're interested in learning more about collecting slide rules, check out The Oughtred Society. They are an international organization dedicated to the history and collection of slide rules and related calculating devices. Sliderule.ca in the News Sliderule.ca was featured in the technology section of the Los Angeles Times (June 28, 2001). The article was reprinted in several online newspapers, most notably the Nando Times and Pioneer Planet. Since the online links are often updated or removed, click here to see a scanned copy of the original article. You might also be interested in following the discussion of the article that ensued at the technology site Slashdot (July 7, 2001). I now know first-hand what it means to get "slashdotted"! A brief review of sliderule.ca has been reported in the online version of the technology business magazine Business 2.0, entitled "When Slide Rules Ruled" (July 18, 2001). One link to sliderule.ca (January 19, 2002) that generated a lot of hits was from the online collection of unusual sites known as memepool. I guess slide rules strike a common meme among people (my apologies to Richard Dawkins for the pun). Search WWW Search www.sliderule.ca For cash donations to the site (note that ONLY cash transactions are possible on this account). For all credit/debit card donations to the site Thanks for your contribution!

U tags

I tags

Welcome to Eric's Slide Rule Site

All the high resolution scans have been reduced to 75 dpi, so what you see on the screen should be roughly the actual size of the rule. Please don't use them anywhere else without letting me know first - thanks!

Slide Rule Resource Centre

Introduction to the Slide Rule Background on logarithms, history of the slide rule, and how it all works. (Updated November 3, 2001

Updated September 12, 2002

Updated May 25, 2002

Updated December 1, 2002

Revised November 27, 2002

Updated September 15, 2002

Updated June 15, 2008

Special Feature - The Evolution of a Slide Rule

Features the major design changes the K&E 4053 went through during its production cycle of over half a century. I'm now up to 19 uniquely different models of this rule! (Updated September 27, 2002)

Slide Rule Collection

several versions

Otis King Model L Cylindrical Rule Sterling Silver Tie Clip Slide Rule-related Paraphernalia Aristo ruler Nr. 1369 Dietzgen surveyor's hand level Hughes Owens ruler 324-1125 Why Collect Slide Rules?

Sliderule.ca in the News

images

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headers

H1

Eric's Slide Rule Site

H2

Welcome to

Slide Rule Resource Centre

Special Feature - The Evolution of a Slide Rule

Slide Rule Collection

Why Collect Slide Rules?

Sliderule.ca in the News

H3

Welcome to

Slide Rule Resource Centre

Special Feature - The Evolution of a Slide Rule

Slide Rule Collection

Why Collect Slide Rules?

Sliderule.ca in the News

H4

Looking for flashlight reviews? Please see my Flashlight Reviews site.

H5

H6

internal links

addressanchor text
Donation
Introduction to the Slide Rule
Types of Slide Rules and their Scales
Slide Rule Manuals
Where to Buy a Slide Rule
How to Clean a Slide Rule
Slide Rule Books
Slide Rule Online Links
Why Collect Slide Rules?
The Evolution of a Slide Rule
Dietzgen
Faber Castell
Hemmi
Keuffel and Esser
4053-3
Nestler
Pickett
Miscellaneous Linear Rules
Circular and Combination Slide Rules
Slide Rule-related Paraphernalia
click here
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external links

addressanchor text
Flashlight Reviews
The Oughtred Society
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Los Angeles Times
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Slashdot
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Business 2.0
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memepool