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Graduated markings, generally logarithmic, on slide rule
A slide rule scale is a line with graduated markings inscribed along the length of a slide rule used for mathematical calculations. The earliest such
Slide_rule_scale
Mechanical analog computer
as aviation or finance feature scales that aid in specialized calculations particular to those fields. The slide rule is closely related to nomograms
Slide_rule
Measurement scale based on orders of magnitude
curves are often depicted on a logarithmic scale graph. The markings on slide rules are arranged in a log scale for multiplying or dividing numbers by adding
Logarithmic_scale
Slide rule designed by Henry Coggeshall
In measurement, the Coggeshall slide rule, also called a carpenter's slide rule, was a slide rule designed by Henry Coggeshall in 1677 to help in measuring
Coggeshall_slide_rule
Advanced type of slide rule
calculator, sometimes called Fuller's cylindrical slide rule, is a cylindrical slide rule with a helical main scale taking 50 turns around the cylinder. This
Fuller_calculator
The Bygrave slide rule is a slide rule named for its inventor, Captain Leonard Charles Bygrave of the RAF. It was used in celestial navigation, primarily
Bygrave_slide_rule
American instrument manufacturing company (1867–1987)
4181-3 slide rule, front scales K&E 4181-3 slide rule, rear scales High-precision extra-length engineering slide rule 4081-5 Sewer slide rule Fetal medical
Keuffel_and_Esser
British inventor
engineer in London who invented and produced a cylindrical slide rule with helical scales, primarily for business uses initially. The product was named
Otis_King
English mathematician (1574–1660)
logarithmic scales (lines, or rules) upon which slide rules are based, Oughtred was the first known to use two such scales in separate rods sliding by one
William_Oughtred
Topics referred to by the same term
Graduation may also refer to: Graduation (scale), the marking of units on a scale such as on a slide rule or instrument Graduation (1915), a novel by
Graduation_(disambiguation)
Simplification of the basic trigonometric functions
9°) Many slide rules – especially "trig" and higher models – include an "ST" (sines and tangents) or "SRT" (sines, radians, and tangents) scale on the front
Small-angle_approximation
English clergyman, mathematician, geometer and astronomer
of numbers refers to the logarithmically divided scale, like the most common scales used on slide rules for multiplication and division. A sail rig which
Edmund_Gunter
Mathematical function
calculations required greater accuracy than could be achieved with a slide rule. By turning multiplication and division to addition and subtraction, use
Common_logarithm
Auxiliary scale of a measurement device, used to increase precision
Nunes Pierre Vernier Slide rule – graphical analog calculator Transversal (instrument making) – technique in use prior to vernier scales Vernier, Pierre (1631)
Vernier_scale
French mathematician (1831-1906)
the modern slide rule. Around 1850, he introduced a new scale system that used a runner to perform calculations. This type of slide rule became known
Amédée_Mannheim
Analog graphical calculator
guideposts to the user. Like a slide rule, a nomogram is a graphical analog computation device. Also like a slide rule, its accuracy is limited by the
Nomogram
Tool used to measure dimensions of an object
measurement on a ruled scale, a dial, or an electronic digital display. A common association is to calipers using a sliding vernier scale. Some calipers
Calipers
Circular slide rule used in aviation
wind triangle calculations using a rotating scale and a sliding panel. The other side is a circular slide rule. Extra marks and windows facilitate calculations
E6B
Development of the mathematical function
three-decade scales, and in 1755 Everard included an inverted scale; a slide rule containing all of these scales is usually known as a "polyphase" rule. In 1815
History_of_logarithms
Marks used to indicate points on a visual scale
non-uniform graduations such as logarithmic or other scales such as seen on circular slide rules and graduated cylinders. Graduations can be placed on
Graduation_(scale)
One of the predecessors of HM Revenue and Customs (1643–1909)
themselves: Excise Licence Duty (the rate of which often varied depending on the scale of production) had to be paid in addition to any duty payable on the goods
HM_Excise
Line formed by the real numbers
Logarithmic scales are used in slide rules for multiplying or dividing numbers by adding or subtracting lengths on logarithmic scales. A line drawn
Number_line
theorem Bel Benford's law Binary logarithm Bode plot Henry Briggs Bygrave slide rule Cologarithm Common logarithm Complex logarithm Discrete logarithm Discrete
Index_of_logarithm_articles
Irrational algebraic number
{10}}} has been used as a folding point for the folded scales on slide rules, mainly because scale settings folded with the number can be changed without
Square_root_of_10
Unusual slide rule using a system similar to discrete logarithms
Model 366 was an unusual model of slide rule, manufactured in Germany by the A. W. Faber Company around 1909, with scales that followed a system invented
A._W._Faber_Model_366
Fowler Calculators Ltd was a manufacturer of slide rules and other scientific and mathematical instruments, based in Manchester, England and founded by
Fowler_Calculators
Mechanical calculator
versions have a built-in slide rule on the back. Sometime between 1666 and 1675, French polymath Claude Perrault invented the first slide calculator, called
Slide_calculator
Composition technique
The rule of thirds is a rule of thumb for composing visual art such as designs, films, paintings, and photographs. The guideline proposes that an image
Rule_of_thirds
Computation machine that uses continuously varying data technology
computer for doing multiplication and division. As slide rule development progressed, added scales provided reciprocals, squares and square roots, cubes
Analog_computer
English mathematician
circular slide rule to him as a present and obtained a patent for 10 years. His design, two concentric rings, each with a logarithmic scale and without
Richard_Delamaine
Topics referred to by the same term
United States Fuller calculator, an advanced cylindrical slide rule with a helical scale Fuller's earth, clay used for filtering and purifying Fuller
Fuller
Mathematical function, inverse of an exponential function
application was the slide rule, a pair of logarithmically divided scales used for calculation. The non-sliding logarithmic scale, Gunter's rule, was invented
Logarithm
Mechanism for converting rotary motion into linear motion
A slider-crank linkage (also commonly referred to as a crank-slider linkage) is a four-link mechanism with three revolute joints and one prismatic (sliding)
Slider-crank_linkage
Imperial unit of mass equal to 14 pounds
A nineteenth-century slide rule for estimating cattle carcass weights, calibrated in stones of 20, 17+1⁄2, 8 and 14 pounds
Stone_(unit)
Landslide east of Oso, Washington, United States
at the scene stated, "When the slide hit the river, it was like a tsunami." A Washington state geologist stated the slide was one of the largest landslides
2014_Oso_landslide
Subspecies of turtle
The red-eared slider or red-eared terrapin (Trachemys scripta elegans) is a subspecies of the pond slider (Trachemys scripta), a terrapin belonging to
Red-eared_slider
Degree of difficulty of a climbing route
(e.g. 7c+), the American YDS system (e.g. 5.13a), and latterly the UIAA scale (e.g. IX+). These systems solely grade the technical difficulty and are
Grade_(climbing)
Positive real number which when multiplied by itself gives 6
A Logarex system Darmstadt slide rule with 7 and 6 on A and B scales, and square roots of 6 and of 7 on C and D scales, which can be read as slightly
Square_root_of_6
Unit for measuring ratios on a logarithmic scale
Jumps Dectave Frequency level Octave One-third octave Order of magnitude Slide rule ISO 80000-3:2006 Quantities and Units – Space and time "Decade, a factor
Decade_(log_scale)
Physical representation of an object
A scale model is a physical model that is geometrically similar to an object (known as the prototype). Scale models are generally smaller than large prototypes
Scale_model
of personal and economic freedom. The index covers the following areas: Rule of Law, Security and Safety, Movement, Religion, Association, Assembly, Civil
List_of_freedom_indices
Australian football rule allowing preferential recruiting access
discount, grand finalists having a 20% levy added to the bid value, and a sliding scale in between. The 2026 amendments also newly required that a maximum of
Father–son_rule
Topics referred to by the same term
Papirius Cursor (consul in 293 and 272 BC) Cursor (slide rule), indicates corresponding points on scales that are not adjacent to each other Cursor Models
Cursor
Hong Kong martial artist and actor (born 1954)
glass that were broken. During a stunt in this last scene, in which Chan slides down a pole from several stories up, the lights covering the pole had heated
Jackie_Chan
Early logic machine
device was used for the "Rule for the Logic of Certainty", the gray slider was inserted from the left. When it was used for the "Rule for the Logic of Probability"
Stanhope_Demonstrator
Measuring and marking tool
inches. The heads, occasionally called anvils, are attached to the rule by sliding the rule into a slot in the side of the head. The head is then tightened
Combination_square
Positive real number which when multiplied by itself gives 7
A Logarex system Darmstadt slide rule with 7 and 6 on A and B scales, and square roots of 6 and of 7 on C and D scales, which can be read as slightly
Square_root_of_7
Free online crowdsourced encyclopedia
December 2012 and December 2013. Its most popular versions are leading the slide: page-views of the English Wikipedia declined by twelve percent, those of
Wikipedia
Method in nonlinear control theory
In control systems, sliding mode control (SMC) is a nonlinear control method that alters the dynamics of a nonlinear system by applying a discontinuous
Sliding_mode_control
Logarithmic unit expressing the ratio of physical quantities
creates confusion, obscures reasoning, is more related to the era of slide rules than to modern digital processing, and is cumbersome and difficult to
Decibel
dangerous contact rule are found throughout amateur competitions, including youth leagues, high school, and college baseball.) A good slide is often more
Rules_of_baseball
Country ranking by public sector corruption
2011, the index was scored on a scale of 10 to 0. Since 2012, the Corruption Perceptions Index has been ranked on a scale from 100 (very clean) to 0 (highly
Corruption_Perceptions_Index
Methods of measurement of beer
scale or else by a special brewer's slide rule. An average strength first running of 1864 would be 30 pounds (13.6 kg) or 1.083 OG. Two common scales
Beer_measurement
objects or toys. An example of this would be a child attempting to slide down a toy slide or attempting to enter and drive a miniature toy car. This phenomenon
Scale_error
Concept in air navigation
using the same tools. Alternatively, the E6B flight computer (a circular slide rule with a translucent "wind face" on which to plot the vectors) can be used
Wind_triangle
Meeting socially intending a future relationship
they actually meet in person—it's that first face-to-face where things slide downhill, and average daters report disappointment across the board, let
Dating
Flexible ruler used to measure size or distance
are often designed for specific uses or trades. Tapes may have different scales, be made of different materials, and be of different lengths depending on
Tape_measure
English engineer and inventor (1773–1829)
logarithmic scales and William Oughtred's (1574–1660) sliding rule, Routledge combined a 12-inch brass slide containing the logarithmic scales with an ordinary
Joshua_Routledge
2014 puzzle game
single-player sliding tile puzzle video game written by Italian web developer Gabriele Cirulli and published on GitHub. The objective of the game is to slide numbered
2048_(video_game)
Former American amusement park in New Jersey
water-slide accidents were due to guests who, in blatant violation of an explicitly posted rule, often discarded their mats midway down the slide and waited
Action_Park
American singer and songwriter (1958–2009)
that "Jackson's feathery-timbred tenor [was] extraordinarily beautiful. It slides smoothly into a startling falsetto that's used very daringly." When Thriller
Michael_Jackson
Chordal accompaniment to a line or melody
harmony by stacking scale tones as triads". A harmonized scale (or harmonised scale) can be created by using each note of a musical scale as a root note for
Harmonization
First pocket scientific calculator
challenged France Rode to create a "shirt-pocket sized HP-9100". At the time, slide rules were the only practical portable devices for performing trigonometric
HP-35
2008 Indian historical fictional drama film by Ashutosh Gowariker
Ashraf, Syed (22 January 2008). "The inspiration behind Jodhaa Akbar — Slide 2a". Rediff.com. Archived from the original on 8 December 2016. Retrieved
Jodhaa_Akbar
Team captain of a football team
Lahm was appointed captain in South Africa, but due to an illness that ruled him out of Germany's final fixture, Bastian Schweinsteiger captained the
Captain (association football)
Captain_(association_football)
Charge transfer due to contact or sliding
describes electric charge transfer between two objects when they contact or slide against each other. It can occur with different materials, such as the sole
Triboelectric_effect
2023 maritime disaster
Retrieved 2025-05-23 – via YouTube. Ashton, Ben (June 23, 2023). "Read the 'sliding door' texts that saved billionaire from Titanic sub disaster". Archived
Titan_submersible_implosion
Rapid flow of a mass of snow down a slope
distinct from slush flows, mudslides, rock slides, and serac collapses. They are also different from large scale movements of ice. Avalanches can happen
Avalanche
American businessman (born 1964)
Amazon investors for just six hours a year. Instead of using presentation slides, Bezos requires high-level employees to present information with six-page
Jeff_Bezos
Lawn game involving throwing bags of corn (or beans)
unofficial rules a game may be called once a shutout score of at least 11–0 is reached. Slide, slider: a bag that lands in front of the hole and slides in. Swish:
Cornhole
Science museum in Cambridge, Massachusetts
collection of hundreds of slide rules, nomograms, and mechanical calculators. The Keuffel and Esser Company collection, from the slide rule manufacturer formerly
MIT_Museum
Video-sharing platform
Machine YouTube. Retrieved February 5, 2012. "Is YouTube's three-strike rule fair to users?". BBC News. London. May 21, 2010. Archived from the original
YouTube
English Twitch streamer (born 2000)
Healthcare's pricing model — which includes a one-off setup fee of £200 and a sliding-scale monthly membership — as too expensive, with some characterising it as
F1NN5TER
American entrepreneur and venture capitalist (born 1967)
Fund made early-stage investments in numerous startups, including Airbnb, Slide.com, LinkedIn, Friendster, RapLeaf, Geni.com, Yammer, Spotify, Practice
Peter_Thiel
Large language model and AI chatbot by Anthropic
for paying customers on April 17, 2026. It generates designs, prototypes, slides and marketing materials from natural-language prompts, uses Claude Opus
Claude_(AI)
Anti-government protests
2026. Mojtahedi, Negar (2 January 2026). "Iran protests expose a system sliding toward collapse, experts say". Retrieved 6 January 2026. Turani, Behrouz
2025–2026_Iranian_protests
Austrian ultralight aircraft
model by ScaleWings for when the European microlight category has its gross weight raised to 600 kg (1,300 lb) to match the US light-sport rules. It will
ScaleWings_SW51_Mustang
from left: A Game Boy Game Pak, a Game Boy Advance Game Pak, and a Nintendo DS Game Card. On the far right is a United States Nickel shown for scale.
List of Game Boy Advance games
List_of_Game_Boy_Advance_games
Data structure for approximate set membership
This result can be leveraged by only expecting a filter to operate on a sliding window rather than the whole stream. In this case, the exponent n in the
Bloom_filter
Use of technology in education to enhance learning and teaching
group teaching, in addition to the need for promoting learning on a larger scale. Over the years, a combination of cognitive science and data-driven techniques
Educational_technology
DreamWorks Animation media franchise
universe, was released on October 4, 2012. Madagascar Preschool Surf n' Slide, a mobile learning game, was released by JumpStart on October 4, 2012, on
Madagascar_(franchise)
Businessman and entrepreneur (born 1971)
2024). "Elon Musk's $56 billion Tesla compensation voided by judge, shares slide". CNBC. Archived from the original on January 31, 2024. Retrieved January
Elon_Musk
playoffs and broke his leg, Major League Baseball instituted the "bona-fide slide" rule. The runner must make contact with the ground before reaching the base
Glossary_of_baseball_terms
Team sport played on ice
Curling is a sport in which players slide stones on a sheet of ice towards a target area that is segmented into four concentric circles. It is related
Curling
Group of related team sports
Australian rules football; Gaelic football; gridiron football (specifically American football, arena football, or Canadian football); International rules football;
Football
Season of television series
Survivor Jumps to Highest Rating Since 2021, The Greatest Average American Slides". The TV Ratings Guide. Retrieved March 20, 2026. Bunch, Rebecca (March
Survivor 50: In the Hands of the Fans
Survivor_50:_In_the_Hands_of_the_Fans
2024 film by Arkasha Stevenson
grade of "C" on an A+ to F scale. Kyle Turner of Slant Magazine gave it 3/4 stars, writing, "Throughout the film, Stevenson slides easily between earthly
The_First_Omen
Voltmeter
wire is laid along the length of a metre rule, and contact with the wire is made through a galvanometer by a slider. When the galvanometer reads zero, the
Potentiometer (measuring instrument)
Potentiometer_(measuring_instrument)
Episodes aired 2025
"Iss Baar Chalegi Gharwalon Ki Sarkaar" (This time, the housemates will rule), introducing a parliament-style twist where housemates formed a government
Bigg Boss (Hindi TV series) season 19
Bigg_Boss_(Hindi_TV_series)_season_19
Chinese tile-based game
several smaller-scale, but equally successful, tournaments held annually by other hosts. Prize pools are based on the number participating. Rules are based
Mahjong
Device used for calculations
compass (by Galileo), logarithms and Napier bones (by Napier), and the slide rule (by Edmund Gunter). The Renaissance saw the invention of the mechanical
Calculator
Type of error-detection protocol at the data link layer, and transport layer for TCP
A sliding window protocol is a feature of packet-based data transmission protocols. Sliding window protocols are used where reliable in-order delivery
Sliding_window_protocol
and Color slide film Fujichrome together with instant 'pack film'. They also undertook contract manufacture for AGFA PHOTO color negative/slide films from
List of discontinued photographic films
List_of_discontinued_photographic_films
1966 Welsh colliery disaster
rain led to a build-up of water within the tip which caused it to suddenly slide downhill as a slurry, killing 116 children and 28 adults as it engulfed
Aberfan_disaster
himself because he's the one stealing the bodies. He considers letting it slide, but Parrish resolutely says no. In "Status Asthmaticus", Stilinski uncovers
List of Teen Wolf (2011 TV series) characters
List_of_Teen_Wolf_(2011_TV_series)_characters
German stationery manufacturing company
manufacturer of pens, pencils, other office supplies (e.g., staplers, slide rules, erasers, rulers) and art supplies, as well as high-end writing instruments
Faber-Castell
2025 disappearance in Canada
2, 2025. A large-scale search effort was undertaken in the days immediately following their disappearance, which was mostly scaled back on May 7 after
Disappearance of Lilly and Jack Sullivan
Disappearance_of_Lilly_and_Jack_Sullivan
Country in East Asia
6,000 years ago. In the 17th century, large-scale Han Chinese immigration began under Dutch colonial rule and continued under the Kingdom of Tungning
Taiwan
Company logo
color on the L, which brought back the idea that Google doesn't follow the rules." The font Catull was used, "I was trying to find something that was both
Google_logo
Measure of lens speed
distant object, remove the focusing screen and replace it by the collodion slide, having previously inserted a piece of cardboard in place of the prepared
F-number
travel, tourism, insurance
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travel, tourism, insurance