Allbrit Polar Planimeter by Stanley
| Item# |
sci216 |
| Status |
Available |
| Price |
$190.00 |
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This Planimeter is a Polar type integrating machine that was made in England to calculate the area of closed irregular shapes. The Planimeter contains three parts: 1) a pole weight with steel pin that... [more info]
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Allbrit Pole Wagon Polar Planimeter by Stanley.
| Item# |
sci217 |
| Status |
Available |
| Price |
$290.00 |
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This Planimeter is a Polar type integrating machine that was made in England to calculate the area of closed irregular shapes. The pole wagon was used to enable mean readings to be taken from continuous... [more info]
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Fowler's Circular Slide Rule Calculator Type ‘Long Scale’
| Item# |
SCI389 |
| Status |
Available |
| Price |
$500.00 |
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Fowler & Co. in Manchester made this pocket calculator. It was designed for engineers; draughtsman and science students with several advantages over straight slide rules. The calculator consists of two... [more info]
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New Allbrit planimeter by Stanley
| Item# |
sci394 |
| Status |
Available |
| Price |
$250.00 |
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This almost new Planimeter is a Polar type integrating machine that was made in England to calculate the area of closed irregular shapes. This Planimeter contains three parts: 1) a pole weight with steel... [more info]
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The Correntator Adding Machine Calculator.
| Item# |
sci392 |
| Status |
Available |
| Price |
$100.00 |
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A Simple Flat Stylus Adding Machine. This stylus slide adder was used for adding and subtracting numbers or English currency. It is very simple in construction it is cleared by pulling a small bar on the... [more info]
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Polar Planimeter with adjustable arms by R. Reiss, Germany.
| Item# |
sci395 |
| Status |
Available |
| Price |
$200.00 |
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This special type Planimeter was made in Germany by Robert Reiss for calculating the surface area of an irregular shape. The instrument consists of three parts: An adjustable pole weight with steel pin... [more info]
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Cylindrical Slide Rule Calculator by Loga, Switzerland, 1915-1920.
| Item# |
sci405 |
| Status |
Available |
| Price |
$1250.00 |
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The Loga Company made this pioneering drum slide rule in Switzerland during 1915 - 1920 under the registered patent of the designer Heinrich Daemen-Schmid from Zurich. It consist of a paper-faced aluminum... [more info]
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A Rare Circular Slide Rule Calculator by Palmer and Fuller. 1847.
| Item# |
sci410 |
| Status |
Available |
| Price |
$950.00 |
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This is a double-sided circular slide rule calculator consisting of concentric moveable circles made in 1847. A lithograph engraving, by George G. Smith from Boston, mounted on heavy cardboard, containing... [more info]
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