Skip to main content
Items Similar to FER model logarithmic circular slide rule H 39 n. 1675 1930s
Small wood and brass wall-mounted aneroid barometer in the shape of a rudder
Small wood and brass wall-mounted aneroid barometer in the shape of a rudder
Engraved boxwood sun clock English manufacture mid-19th century.
Engraved boxwood sun clock English manufacture mid-19th century.
Small Italian aneroid wooden wall barometer in the shape of a rudder 1950s
Small Italian aneroid wooden wall barometer in the shape of a rudder 1950s
Compensated brass barometric altimeter signed Stanley London from the early 1900s
Compensated brass barometric altimeter signed Stanley London from the early 1900s
Antique German aneroid barometer from the early 1900s made of turned marble.
Antique German aneroid barometer from the early 1900s made of turned marble.
Torricellian barometer signed Heineman Strada Toledo 213 Naples mid-nineteenth century.
Torricellian barometer signed Heineman Strada Toledo 213 Naples mid-nineteenth century.
Want more images or videos?
Request additional images or videos from the seller
1 of 21

FER model logarithmic circular slide rule H 39 n. 1675 1930s

$2,612.91
£1,958.56
€2,200
CA$3,613.27
A$3,933.93
CHF 2,100.59
MX$47,488.68
NOK 26,408.21
SEK 24,562.71
DKK 16,761.59

About the Item

FER model logarithmic circular slide rule H 39 No. 1675 from the 1930s, Italian Patent No. 1680, housed in its original round-shaped wooden box like the instrument, complete with instruction booklet. Worldwide patented calculator for rapid and safe calculation of dimensions of reinforced concrete structures. The instrument is made of lithographed aluminum and The dial has 10 rings on which the logarithmic graduations are indicated and a crank with eight buttons that can be raised or lowered to allow calculations.An instruction booklet explains its proper use in a very analytical way with examples and diagrams. Made by Construction Officine Meccaniche F.lli Ingg Ferrero Corso Mazzini 29 Savona in the 1930s. Buono stato perfettamente funzionante. Instrument diameter cm 27 - 10.6 inch, height cm 4 -1.6 inch.. The slide rule is based on logarithms and owes its origin to the scale devised in 1607 and published in 1623 by the English astronomer and mathematician Edmund Gunter (1581_1626). Gunter's scale consists of two scales of logarithms, which run from one end to the other and are used with compasses to multiply and divide. In 1630 another English mathematician, Reverend William Oughtred (1574-1600), placed the two scales side by side, eliminating the compasses, thus fabricating the first sliding scale slide rule. The effectiveness of the slide rule as a tool for quickly performing multiplication and division, as well as squares, roots, and many other operations through addition or difference on logarithmic scales, was not appreciated until the late 18th century. Special versions were prepared for particular activities, for example, to measure lumber, iron bars, barrels, heads of cattle, to calculate taxes on wines and spirits. Rules were also constructed for chemical equivalencies, for calculating rents, barometric heights, and photographic exposure time. It is believed that more than 250 types of slide rules were in use in the 19th century.
  • Dimensions:
    Height: 1.6 in (4.07 cm)Diameter: 10.6 in (26.93 cm)
  • Materials and Techniques:
    Aluminum
  • Period:
    1930-1939
  • Date of Manufacture:
    1930
  • Condition:
    Wear consistent with age and use.
  • Seller Location:
    Milan, IT
  • Reference Number:
    1stDibs: LU1020244381902

More From This Seller

View All
Small wood and brass wall-mounted aneroid barometer in the shape of a rudder
Located in Milan, IT
Small wood and brass wall-mounted aneroid barometer in the shape of a six-ankle rudder. Signed SB Smiths British Made Instrument of the 1950s. This is an instrument whose pressure-s...
Category

Mid-20th Century Scientific Instruments

Materials

Wood

Small wood and brass wall-mounted aneroid barometer in the shape of a rudder

Small wood and brass wall-mounted aneroid barometer in the shape of a rudder

$332
Engraved boxwood sun clock English manufacture mid-19th century.
Located in Milan, IT
Engraved boxwood diptych sun clock with brass hinges and locking hooks, book-shaped, mid-19th-century English manufacture. The clock has an orientation compass inserted in the base w...
Category

Antique Mid-19th Century Scientific Instruments

Materials

Wood

Engraved boxwood sun clock English manufacture mid-19th century.

Engraved boxwood sun clock English manufacture mid-19th century.

$1,781
Small Italian aneroid wooden wall barometer in the shape of a rudder 1950s
Located in Milan, IT
Small wood and brass wall-mounted aneroid barometer in the shape of an eight-ankle rudder, with weather indications in Italian, signed Huger of the 1950s. This is an instrument whose...
Category

Mid-20th Century Scientific Instruments

Materials

Wood

Small Italian aneroid wooden wall barometer in the shape of a rudder 1950s

Small Italian aneroid wooden wall barometer in the shape of a rudder 1950s

$261
Compensated brass barometric altimeter signed Stanley London from the early 1900s
Located in Milan, IT
Brass compensated barometric altimeter signed Stanley London No. 1581 from the early 1900s. Diameter 7.6 x 3 cm - inches 3x1.2. An altimeter is an instrument for measuring the heig...
Category

Early 20th Century Scientific Instruments

Materials

Brass

Compensated brass barometric altimeter signed Stanley London from the early 1900s

Compensated brass barometric altimeter signed Stanley London from the early 1900s

$950
Antique German aneroid barometer from the early 1900s made of turned marble.
Located in Milan, IT
Antique German aneroid barometer from the early 1900s made of turned marble, brass, and glass. Good state. Working order. Diameter cm 17 - inches 6.7, thickness cm 5- inches 1.9...
Category

Vintage 1910s Scientific Instruments

Materials

Marble

Antique German aneroid barometer from the early 1900s made of turned marble.

Antique German aneroid barometer from the early 1900s made of turned marble.

$890
Torricellian barometer signed Heineman Strada Toledo 213 Naples mid-nineteenth century.
Located in Milan, IT
Torricellian mercury barometer signed Heineman Strada Toledo 213 Naples for the Italian market, in mahogany wood from the mid 19th cent. complete with reading nonius for checking p...
Category

Antique Mid-19th Century Scientific Instruments

Materials

Wood

Torricellian barometer signed Heineman Strada Toledo 213 Naples mid-nineteenth century.

Torricellian barometer signed Heineman Strada Toledo 213 Naples mid-nineteenth century.

$2,315

You May Also Like

Cronometro da marina, SEWILL, Inghilterra fine XIX secolo
By Sewill Liverpool
Located in Vicenza, VI
Cronometro da marina prodotto da Sewill, custodito in una cassa cubica in legno di palissandro, con spigoli e filettature in ottone, di dimensioni 18x18x19 cm. È dotato di due coperc...
Category

Antique Late 19th Century English Other Nautical Objects

Materials

Brass

Cronometro da marina, SEWILL, Inghilterra fine XIX secolo

Cronometro da marina, SEWILL, Inghilterra fine XIX secolo

$3,444
Antique Surveyor s Circumcompendium Signed Brand Frères, 1850-1880
Located in Bilzen, BE
"Antique Surveyor's Circumcompendium Signed Brand Frères, 1850-1880" Description: Antique Surveying Circumferentor by Brand Frères Brand Frères, Optic...
Category

Antique Mid-19th Century Belgian Other Scientific Instruments

Materials

Brass

Antique Surveyor s Circumcompendium Signed Brand Frères, 1850-1880

Antique Surveyor s Circumcompendium Signed Brand Frères, 1850-1880

$2,743
Holland Circle by Baumann and Kinzelbach
Located in New Orleans, LA
This intriguing item is almost certainly a Holland Circle by German scientific instrument makers Baumann & Kinzelbach. The Holland Circle, sometimes referred to as a Dutch Circle, was used in land surveying and is a precursor to the theodolite, an optical instrument for measuring angles. Baumann and Kinzelbach were based in Stuttgart, Germany, and in addition to crafting surveying instruments...
Category

Antique 19th Century German Scientific Instruments

Materials

Bronze

Holland Circle by Baumann and Kinzelbach

Holland Circle by Baumann and Kinzelbach

$6,850
Scientific tool for demonstrating the refraction of light, Italy 1920.
Located in Milan, IT
Scientific tool for demonstrating and assessing the refraction of light. Constructed in boxed metal with a square section, it consists of a horizontal tube that bends a few grids in ...
Category

Early 20th Century Italian Scientific Instruments

Materials

Metal

Scientific tool for demonstrating the refraction of light, Italy 1920.

Scientific tool for demonstrating the refraction of light, Italy 1920.

$1,425
Antique French Holosteric Library Barometer
Located in Norwell, MA
Nineteenth-century holosteric library barometer with "PHBN" logo (Pertuis, Hulot, Naudet), the French maker. Copperish brass case with hanging ring. Faceplate is segmented to thirty-...
Category

Antique 1890s North American Scientific Instruments

Materials

Brass

Antique French Holosteric Library Barometer

Antique French Holosteric Library Barometer

$695
Scientific tool for demonstrating the refraction of light, Italy 1920.
Located in Milan, IT
Scientific tool for demonstrating and assessing the refraction of light. Constructed in boxed metal with a square section, it consists of a horizontal tube that bends a few grids in ...
Category

Early 20th Century Italian Scientific Instruments

Materials

Metal

Scientific tool for demonstrating the refraction of light, Italy 1920.

Scientific tool for demonstrating the refraction of light, Italy 1920.

$1,425

More Ways To Browse

Basa Vintage
Used Refractor Telescopes
Wheel Barometer
Antique Butcher Scale
Antique Measuring Devices
Antique Medical Models
Antique Planetarium
Avery Scales
Berkel Vintage
Brass Telescope On Tripod
British Compass
Edwardian Barometers
Human Brain
Molecular Model
Pocket Barometer
Salter Scale
Tripod Binoculars
W T Avery
View All Popular Scientific Instruments Searches