Stanley Great Turnstile London England Fuller Calculator Spiral Slide Rule
Item History & Price
| Reference Number: Avaluer:4290119 | Modified Item: No |
| Country/Region of Manufacture: United Kingdom |
The item is a Fuller spiral slide rule, made by Stanley of London, England.
This particular unit was made in 1919, and has a serial number 4256. It is made of mahogany and brass, and is in very good condition. There is a small split in the lid, and a small scrape on one of the cylinders, otherwise it's in excellent shape. A friend came across it when he was cleaning out his parents house, other than that I know nothing of it's history.
Below is a descr...iption of a similar Fuller slide rule from the Smithsonian National Museum of American History:
"This rule consists of an outer wooden cylinder that slides up and down and rotates. Two brass rings lined with felt are inside this cylinder. The cylinder is covered with paper marked with a single spiral logarithmic scale graduated into 7250 parts and having a length, according to the maker, of 500 inches (nearly 42 feet). Inside the outer cylinder is a longer wooden cylinder, covered with paper marked with decimal, conversion, and sine tables. A solid mahogany handle is at one end. A third cylinder of brass is inside the instrument. A brass index is screwed to the top of the handle. A second, longer brass index is screwed to the mahogany base and marked with a scale of equal parts used in finding logarithms.The tables on the middle cylinder include: decimal equivalents of feet and inches in feet; decimal equivalents of quarter weights and pounds in hundredweights; decimal equivalents of ounces and pounds in fractions of a pound; decimal equivalents of pounds, shillings, and pence in fractions of a pound; decimal equivalents of pence in shillings; days of the year as a fraction of the year; decimal equivalents of subunits of an acre; properties of various metals and woods; decimal equivalents of minutes of a degree in degrees; the Birmingham wire gauge; various conversion factors (mostly for weights and measures); and natural sines."
This particular unit was made in 1919, and has a serial number 4256. It is made of mahogany and brass, and is in very good condition. There is a small split in the lid, and a small scrape on one of the cylinders, otherwise it's in excellent shape. A friend came across it when he was cleaning out his parents house, other than that I know nothing of it's history.
Below is a descr...iption of a similar Fuller slide rule from the Smithsonian National Museum of American History:
"This rule consists of an outer wooden cylinder that slides up and down and rotates. Two brass rings lined with felt are inside this cylinder. The cylinder is covered with paper marked with a single spiral logarithmic scale graduated into 7250 parts and having a length, according to the maker, of 500 inches (nearly 42 feet). Inside the outer cylinder is a longer wooden cylinder, covered with paper marked with decimal, conversion, and sine tables. A solid mahogany handle is at one end. A third cylinder of brass is inside the instrument. A brass index is screwed to the top of the handle. A second, longer brass index is screwed to the mahogany base and marked with a scale of equal parts used in finding logarithms.The tables on the middle cylinder include: decimal equivalents of feet and inches in feet; decimal equivalents of quarter weights and pounds in hundredweights; decimal equivalents of ounces and pounds in fractions of a pound; decimal equivalents of pounds, shillings, and pence in fractions of a pound; decimal equivalents of pence in shillings; days of the year as a fraction of the year; decimal equivalents of subunits of an acre; properties of various metals and woods; decimal equivalents of minutes of a degree in degrees; the Birmingham wire gauge; various conversion factors (mostly for weights and measures); and natural sines."
