Same here, setting out on M3 motorway using 7 figure log tables and a wind up calculator, working out of a mobile site office with gas lighting and heating.At school in the 1960s, I had a book of 5-figure tables. But working on road schemes in the early-mid 1970s, we did our setting-out calculations using books of 7-figure tables, which were hardbacks about an inch and a half thick. We finally scrapped our last office copy in an office move around 2006.
After two years in my first job, in leaving in 1969 to go to a research laboratory, I was given a slide rule as a goodbye present. Hardly ever used it as when I got to my new job there were very early mains-powered calculators available and then eventually pocket calculators which also enabled the ditching of trigonometry tables.Re: Slide Rule
Following this conversation I’ve been on the t’internet (Amazon) to find a slide rule similar to what I would have used back in the 1960’s/1970’s but with no success. I’m guessing they don’t exist any more?
That must have been one of the last imperial jobs, maybe it had been in design for a long while. My first site as a student engineer was on the (then) A45 in Suffolk in 1973, which was already all metric. Presumably you worked in decimal feet rather than feet and inches, which would have added an extra complication?Same here, setting out on M3 motorway using 7 figure log tables and a wind up calculator, working out of a mobile site office with gas lighting and heating.
Ironic part was as that contract was imperial units, having to convert distances measured in metric (by Wild DI 10? distomat) to decimal feet. 3.2808 ft to metre seems to be ingrained in memory to this day.
For that reason they were actually faster than an electronic calculator when used by a skilled, experienced operator and hung on in some sectors well into the 80s. I used to work with someone who was a Comptometer operator from the early 60s to mid 70s, I found her description of how the things worked fascinating, I didn't know such a thing even existed before I met her.I think that was the Comptometer, a sort of adding machine that gave access to all numbers on each digit of the numbers entered. It was in it's time a role that needed training in order to use them at speed.
After two years in my first job, in leaving in 1969 to go to a research laboratory, I was given a slide rule as a goodbye present. Hardly ever used it as when I got to my new job there were very early mains-powered calculators available and then eventually pocket calculators which also enabled the ditching of trigonometry tables.
You could include football commentators in this, the younger generation still sometimes refer to a “slide rule pass” meaning highly accurate, although they have probably never seen a slide rule…In science fiction stories of 60 or more years ago, engineers frequently used slide rules, often referred to colloquially as slipsticks. This name was sometimes applied to the engineers themselves. That seems especially prevalent in stories by Robert Heinlein. Readers today must wonder what it all means.
It's interesting that some writers imagining a world centuries in the future assumed that slide rules would still be in use, though there were others who did envisage some sort of personal calculator.
That's likely because aircraft altitudes are measured in feet (outside of Russia and China) so he'd be more familiar with that than metres.However just this morning I see a boy of about the age I was in the late 70s talk about something (I don't know what) as being "3000 feet up in the air".
In science fiction stories of 60 or more years ago, engineers frequently used slide rules, often referred to colloquially as slipsticks. This name was sometimes applied to the engineers themselves. That seems especially prevalent in stories by Robert Heinlein. Readers today must wonder what it all means.
It's interesting that some writers imagining a world centuries in the future assumed that slide rules would still be in use, though there were others who did envisage some sort of personal calculator. Perhaps it's relatively easy to imagine the calculator but more difficult to imagine the form it would take. When pocket calculators began to become available in the 1970s few people would have expected it to exist in a much more advanced form on a smartphone. I won't try to predict its form fifty years from now!
Prior to that, Boots sold own-brand slide rules.Slide rules obviously went out very quickly, for I never encountered them. Having said that, I do rememeber calculators still being a luxury item so there was probably a small window (late 70s, very early 80s) when neither were widespread. I got my first calculator in 1981, and it seemed very futuristic, yet only a short time later I'd have my first computer (the Sinclair Spectrum). A model with a black screen and green digits, it was branded Boots but was actually a Timex-made device.
My first calculator was £4.95 from a promotion on the back of a Cornflakes packet in ~ 1976. That is ~£48 adjusted for inflation.Slide rules obviously went out very quickly, for I never encountered them. Having said that, I do rememeber calculators still being a luxury item so there was probably a small window (late 70s, very early 80s) when neither were widespread. I got my first calculator in 1981, and it seemed very futuristic, yet only a short time later I'd have my first computer (the Sinclair Spectrum). A model with a black screen and green digits, it was branded Boots but was actually a Timex-made device.
And it appears to only do the four basic arithmetic operations, so almost £12.50 per function. Now you can get a scientific calculator with over 400 functions for about the same amount!My first calculator was £4.95 from a promotion on the back of a Cornflakes packet in ~ 1976. That is ~£48 adjusted for inflation.
Given the date, more likely vacuum fluorescent than green LED.My first calculator (circa 1975/6 I think) was a beauty with a bright green LED display and 'proper' keys which I used it for keeping darts scores. I later on shot it with an air rifle (popular with adolescents and miscreants back in the day and widely available with no restrictions = anachronism) for some reason and I bitterly regret it now. It did the basic arithmetic operations and had no memory: not even a fraction of a KB, but it was gorgeous and that's what matters. RIP
There is no known calculator before 1980 with a green LED display
Ah. Thanks. It lit up beautifully with a hypnotic emerald glow that transcended mere arithmetic, and to switch it on was to be transported to realms ethereal.Given the date, more likely vacuum fluorescent than green LED.
http://www.vintagecalculators.com/html/calculator_displays.html
Ah. Thanks. It lit up beautifully with a hypnotic emerald glow that transcended mere arithmetic, and to switch it on was to be transported to realms ethereal.
Whatever was taught at school, remember that as soon as they went home children were back in an imperial measure environment, with their parents using imperial measures. As children spend more time out of school than in it is no surprise that everyday use of imperial measures continues to this dayOne might be tempted to say using feet rather than metres for elevation, or pounds and ounces rather than kilograms and grams.
As long ago as about 1979, in the earlier years of primary school, we has a session on weights and measures, the metric system was used, and the message was very much that it was the contemporary system, fit for the late 70s and 80s. Later of course, in science subjects at secondary school, the SI system was very much the thing to use.
However just this morning I see a boy of about the age I was in the late 70s talk about something (I don't know what) as being "3000 feet up in the air".
Slide rules obviously went out very quickly, for I never encountered them. Having said that, I do rememeber calculators still being a luxury item so there was probably a small window (late 70s, very early 80s) when neither were widespread. I got my first calculator in 1981, and it seemed very futuristic, yet only a short time later I'd have my first computer (the Sinclair Spectrum). A model with a black screen and green digits, it was branded Boots but was actually a Timex-made device.
And to quote Sam Cooke I still don't really "know what a slide rule is for"...
That was the case for me, my dad exclusively worked in imperial measurements so I picked up both (give or take a year or two I'm around the same age as @nw1 )Whatever was taught at school, remember that as soon as they went home children were back in an imperial measure environment, with their parents using imperial measures. As children spend more time out of school than in it is no surprise that everyday use of imperial measures continues to this day
Used imperial throughout school (although familiar with metric linear, mass and volume measure), and transferred to metric at work around 1970. My mix is:That was the case for me, my dad exclusively worked in imperial measurements so I picked up both (give or take a year or two I'm around the same age as @nw1 )
The advantage of that is I find converting the most commonly used measurements from imperial to metric or vice versa very easy, the downside is I use a mix of both:
Dimensions and short distances - metric
Longer distances - imperial
Altitude (of aircraft or mountains) - imperial
Weight of a person - imperial
Weight of literally anything else - metric
Temperature - metric
Volume - metric (unless it's in the context of fuel consumption when I use the imperial mpg)
Stones make zero sense to me. Give me pounds or kilos any day.Body weight - kg, - in my case still too many,lb is a totally useless measurement for body weight but st & lb OK
I agree, but they aren't as daft as £sd.Stones make zero sense to me. Give me pounds or kilos any day.
A Rovex model locomotive....were these taken over by Tri-Ang?
My first calculator (circa 1975/6 I think) was a beauty with a bright green LED display and 'proper' keys which I used it for keeping darts scores. I later on shot it with an air rifle (popular with adolescents and miscreants back in the day and widely available with no restrictions = anachronism) for some reason and I bitterly regret it now. It did the basic arithmetic operations and had no memory: not even a fraction of a KB, but it was gorgeous and that's what matters. RIP
Interesting, looks like calculators came in earlier than I thought, I'd have guessed around 1978/79. I remember my parents getting one at the end of 1980 and I was fascinated to the extent that they got me one of my own a few months later.