Today marks the 200th anniversary of the end of the traditional ale pint 🍺. Imperial measures led to a reduction in the size of a #pint of #beer, from about 578 ml to about 568 ml. #metric #metrication #OTD Our latest blog article: The end of the traditional pint metricviews.uk/2026/01/01/t...

56 years ago today was the last chance to use the HALF CROWN coin, before the switch to #decimal currency. There were four crowns to the pound, but crown coins weren't in general use. When learning about money, any child asking what it was worth would be told, "TWO AND SIX". #OTD #decimalisation

🎄 🎅 Merry Christmas 🎁 🎄 A metric-size Robertson's Christmas Pudding 🥳 400 g METRIC PACK - circa 1980 #ChristmasPudding #metricpack #metrication #metric #metricsystem #Christmas

Top 30 posts of 2025, #30...

Here's a 1973 edition of the leaflet ... #GoingMetric

Dec 1972: Metrication Check List for Managers ad from The Metrication Board (+Regular publications related to metrication) «Business is simpler in metric.»

On this day 60 years ago, the British standard for screw threads 🔩 went #metric. On 23 November 1965, major sectors of British industry approved a BSI policy statement urging British firms to make ISO metric threads their first choice for all future designs. #OTD #metricsystem #metrication #ISO

On this day 50 years ago, breakfast cereals went #metric. On 1 November 1975, METRIC PACK sizes ⚖️ were introduced for flaked breakfast cereals 🌽❄️. Imperial pack sizes were withdrawn on 30 June 1978. #OTD #metricsystem #metrication

The cost can be reduced if the speed limit reduction takes place at the same time as a switch to metric speed limits. “30” signs could be retained, but perhaps with the addition of a temporary “km/h” plate. Metric also provides a more flexible range of speed limits. metricviews.uk/2023/09/01/o...

For 50 years now, the familiarity of the 1 kg bag of sugar has made it easy to visualise body weight ⚖️ changes in kilograms To visualise weight changes in stones 🪨, we have ... oh! The sale of #METRIC PACKs of sugar was first permitted 50 years ago today, on 1 October 1975 #thinkmetric #OTD #KISS

#OTD On this day, 50 years ago, the Post Office 🏤 went #metric 📏. On 29 September 1975, all ⚖️ weight-based 📮📦 postal tariffs switched to the #metric system. POSTER: "Mail goes metric from 29 Sept" metrication.uk/post-office/

Sep 1974: Metric System ad from The Metrication Board (+Cement; Plaster; Linseed Oil Putty; Deodorants; Cosmetics; Shaving Creams; Hair Sprays; Pharmaceutical Products; Dog Meat; and After Shave) «Weighing up the kilogram.»

2025 is the 50th anniversary of Rugby's switch to the #metric system for all measurements. In 1975, the 25-yard line became the 22-metre line, and the crossbar height was set at 3.0 metres. passport.world.rugby/laws-of-the-...

METRIC PACKS of Homepride flour in the "Homepride Selection" catalogue leaflet, 1979 bsky.app/profile/oldu...

Sugar in 1 kg METRIC PACKS first appeared in the shops 49 years ago, in the summer of 1976: bsky.app/profile/oldu...

Aug 1979: Butter ad from The Metrication Board «And now butter goes metric too. The new metric packs weigh 10% more than the old sizes.»

#OTD 44 years ago, #metric restriction signs 🚗 were introduced on 🇬🇧 UK roads. From 13 August 1981, metric units 📏 could be used for the first time to indicate height, width and length restrictions on 🇬🇧 UK road signs. Weight restriction signs went metric on the same day. #metrication #roadsigns

For fun, here's an expanded version of the diagram, with a few more imperial units added, like cubic inches. How many people know all the imperial conversion factors? For anyone daunted by learning the metric system 📏, the equivalent #metric chart is included alongside.

#OTD 57 years ago, the Government confirmed that 1975 would be the end date for the UK's #metrication programme. Speed limits were to go #metric in 1973, but that date was postponed. 50 years after the 1975 target date, we are still waiting for the Government to complete its metrication programme.

55 years ago this month, the Commonwealth Games went #metric. In July 1970, athletics and swimming events switched to the metric system. In track events 🏃, metres replaced yards. In field events, metres (to 2 decimal places) 📏 replaced feet and inches. In swimming 🏊, metres replaced yards.

165 years ago, in his opening address at the London meeting of the International Statistical Congress, on 16 July 1860, Prince Albert drew attention to the measurement muddle, and was in no doubt that it would have to go. #metrication #metric #decimalisation #OTD metricviews.uk/2025/07/15/p...

#OnThisDay 130 years ago, the Select Committee on Weights and Measures ⚖️ proposed a rapid switch to the #metric system. Published 1 July 1895, their report recommended: "That after a lapse of two years the metrical system be rendered compulsory by Act of Parliament." ukma.org.uk/wp-content/u...

#OnThisDay #OTD 55 years ago, the first British decimal stamps 🏤📮 were issued. A 10p stamp might not seem "high value" today, but when stamps went #decimal in 1971, a 2nd class stamp ✉️ was 2½p. The 10p, 20p and 50p stamps served as 2/-, 4/- and 10/- stamps until D-Day - 15 February 1971.

#OnThisDay #OTD 60 years ago, President of the Board of Trade, Douglas Jay announced the Government's intention for the UK to switch to the #metricsystem 📏 ⚖️ within 10 years. #metrication

Today, 20 May 2025, is World Metrology Day #BIPM150 #metrication #metric The World Metrology Day Symposium can be watched LIVE at this link now: youtu.be/GEt30j80CN4

20 May 2025 is World Metrology Day. #OnThisDay #OTD 150 years ago, 17 nations signed the International Treaty of the Metre 📜📏, aka the Metre Convention. This marked the establishment of the BIPM, the 🌐International Bureau of Weights and Measures ⚖️📏. #BIPM150 #metrication #metric system

The @metoffice.bsky.social switched to degrees #Celsius for all #weather reports 63 years ago, yet some TV forecasts 🌦️ still give temperatures in #Fahrenheit. In contrast, Australia and Canada both managed the change in one day: 🇦🇺 1972-09-01, 🇨🇦 1975-04-01. #metrication #metricsystem #bbc

#OnThisDay in 1975, rail traffic went #metric. On 5 May 1975, #rail traffic switched to metric measurements for loads, capacities, tare weights and brake force.

If professional boxing used #metric weight categories, like those used in the amateur sport, he would have qualified comfortably. bsky.app/profile/ukma...

#OnThisDay in 1668, "An Essay Towards a Real Character, and a Philosophical Language", by John Wilkins, was published by the @royalsociety.org . It proposed a universal #decimal system of weights and measures, including a new Standard unit of length 📏, almost exactly equal to our modern day #metre.

The Liberal Democrats @libdems.org.uk have become the latest political party to join the populist "save the pint" 🍺 bandwagon. Our latest blog post : Lib Dems block ability of Minister to allow metric measures for draught beer metricviews.uk/2025/04/04/l...

Do you still think of timber in terms of 2-by-4s? If so you are probably showing your age. #OnThisDay #OTD 55 years ago, timber 🪵 went #metric. From 1 April 1970, all sawn softwood 🪚🪵 was sold in cross sections in millimetres, and round metric lengths.

#OnThisDay #OTD 56 years ago, Minister of Transport Richard Marsh announced plans to switch road 🚗 speed limit signs to kilometres per hour. "We propose, subject to further consultation, that speed limits should become #metric in 1973." #metricsystem hansard.parliament.uk/%E2%80%8CCom...

#OnThisDay #OTD 56 years ago, prescription medicines ⚕️💊went #metric. From 3 March 1969, the metric system became obligatory for the dispensing of all prescriptions. Bottled medicines were accompanied by 5 mL spoons 🥄, and were reformulated for standard dose volumes of 5 mL and 10 mL.

Didn't going #metric mean that we would never need to know HOW BIG an #acre is? 🤷 Here's a handy diagram of antiquated units of area to decypher the acre used by today's estate agents 🏡 and TV shows 📺. Or, maybe they could just use square metres and #hectares. #KISS #keepitsimple #metricsystem

Truly a man ahead of his time. In 1668, The Royal Society published another of his works, "An Essay Towards a Real Character and a Philosophical Language", in which he laid out the core principles of what would become the decimal #metric system, over 120 years later. metrication.uk/more/history...

Could metrication have shortened World War I by 2 years, and saved millions of lives? In 1904, Parliament came close to fully-adopting the metric system. In our latest blog article, we consider one of the possible consequences of failing to do so. metricviews.uk/2025/02/14/c...

50 years ago this month, carpets 🚗🐕🐈 went #metric. In February 1975, #carpet retailers agreed to switch to metric unit pricing for carpets and floor coverings. But a failure to back up the voluntary move with legislation allowed the process to be reversed in 1977.

Bricks 🧱 officially went metric 55 years ago this month, when the new #metric British Standard on bricks was published. The new metric system size was already in use by the late 1960s, having been previously proposed by the Brick Development Association 🧱 in 1967.

Today marks the 20th anniversary of the #metrication of speed limits in the Republic of Ireland. 20 January 2005 was the day that all speed limits in Ireland switched from mph to km/h. metricviews.uk/2025/01/20/2...

#OnThisDay #OTD 20 years ago, speed limits in Ireland 🇮🇪 went #metric. On 20 January 2005, all road speed limits 🚗 in the Republic of Ireland switched from mph to km/h.

#OnThisDay #OTD 🥂 30 years ago, wine 🍷 serving sizes went #metric. From 1 January 1995, wine 🍾 served in glasses 🍷 was required to be sold in serving sizes of 125 ml or 175 ml, or multiples of either of these two amounts. Standard serving sizes enable customers to compare prices easily.

#OnThisDay 50 years ago, salt 🧂 went #metric. Salt in round metric pack sizes was first permitted #OTD on 1 January 1975. Imperial pack sizes ceased to be authorised on 30 June 1978.

🎄 🎅 Season's Greetings 🎄 Did you know that Corn Flakes 🌽❄️ were one of the first food items to go #metric? - Switching to round metric pack sizes in 1976, and metric-only labelling in 1980.

If you're indulging in a festive dinner this week, this man could tell you how much energy you'd need to cook it: James Prescott Joule FRS, born #OnThisDay in 1818. His work on heat was crucial to the first law of thermodynamics, and the SI unit for for energy is named in his honour.

50 years ago, Australia 🇦🇺 showed how smoothly switching road signs to the metric system could be done. 1 July 1974 was M-day for speed limits. (Speed limits in the UK had originally been due to go #metric the year before) www.nbnnews.com.au/2024/07/21/r...

Measuring up for new blankets this winter? - then you'll need your metric tape measure 📏. This winter sees the 50th anniversary of the British blanket industry 🇬🇧 🛏️ going metric - standardising on round #metric sizes for all blankets in 1974.

The Department for Transport introduced #metric restriction signs way back in 1981. 43 years later, and counting, why do imperial-only signs still even exist? bsky.app/profile/ukma...