Vintage Logarithmic scale Logarex,Slide Ruler,Czechoslovak, Slide Engineering tool Old architect tool,Analog computer in black leather case

Sold by larasstyle
$28.00
+ $11.00 shipping

Only 1 available

$28.00
+ $11.00 shipping
In stock
Preparation takes 1-2 business days
Arrives from Bulgaria
Returns and exchanges accepted
See this seller's return policy

Features
Vintage

Item details

Vintage slide ruler Logarithmic scale Logarex with Toison Dor system,1970's in black leather case Czechoslovak Slide rule Engineering tool Old architect gift Analog computer, analog calculator

Calculating line is a portable mechanical computing device, usually consisting of three assembled calibrated lines and sliding cursor used to report interim results. Was invented in 1622 by William Oughtred and distribution of electronic calculators in the 1970s is widely used for rapid estimates (with highest accuracy to two decimal places) scientific and engineering calculations.

Main idea:
Most slide rules consist of three lines with the same length, which are assembled so that the average can move longitudinally with respect to the other two. The outer two lines are fixed relative to one another. Sliding cursor with one or more vertical lines used to mark the subscore on one of the rocks.

Overall mathematical calculations are carried out markers for the moving average line are aligned with those of any external rocks. Tags engraved or printed on the lines are precisely placed, so as to allow the performance of a number of mathematical operations. The geometry of the markers determine which operations can be performed.

Measurements:
Lenght - 33 cm or 13 inch
Width - 5 cm or 2 inch
Hight - 0.8 cm or 0.3 inch

In excellent vintage condition.
REMARK: On the back of leather case of logarithmic ruler has got small smudge as you can see on the pictures.

If you have any questions please write me. Thanks!!!

✈Shipping:
All items will be shipped via priority mail with tracking number.


Thank you for visiting my store!


FAQs

Purchasing multiple, you also will take advantage of a combined shipping and save on the shipping costs (this will be automatically applied at checkout).

I send worldwide via Priority Registered Air Mail with tracking number available and delivered upon signature. After your payment , I will send your item to you within 1-2 business days. For calculated of the shipping terms to your destination, please check the "Shipping" section in my shop policies. For upgraded express shipping (3-6 business days), please send me a message. Larasstyle guarantees you complete confidentiality!

An item may be placed on hold for 7 days. Please contact me for details.

Purchasing multiple, you also will take advantage of a combined shipping and save on the shipping costs (this will be automatically applied at checkout).

I send worldwide via Priority Registered Air Mail with tracking number available and delivered upon signature. After your payment , I will send your item to you within 1-2 business days. For calculated of the shipping terms to your destination, please check the "Shipping" section in my shop policies. For upgraded express shipping (3-6 business days), please send me a message. Larasstyle guarantees you complete confidentiality!

An item may be placed on hold for 7 days. Please contact me for details.



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Arrives from Bulgaria
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Ship items back within: 30 days of delivery
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