You can get an App for that

[thinfourth]

On my iPhone (other brands are available) i have folder called workshop

In that folder i have called workshop with a few very useful apps in it

https://itunes.apple.com/en/app/trianglecalc/id326268526?mt=8

for working out triangles as my maths sucks

https://itunes.apple.com/us/app/dimconvert/id324256952?mt=8

Which converts from metric into imperial IN FRACTIONS!!!!!!

https://itunes.apple.com/gb/app/miter-pipe-calculator/id517273421?mt=8

which calculates many things for pipework

So what do you guys use and would recommend to others

 

[daleyd]

RS has an app which is useful for resistor colour codes and other electronic type things.

 

[daleyd]

A shameless plug for the company I work for, Eurotherm has a couple of apps for comms wiring and thermocouple colour codes here ......
thermocouple by Eurotherm
https://appsto.re/gb/J7dxv.i

 

[MattH]

Useful info, thanks OP.

 

[Wendelspanswick]

The Stanley Level app, turns your iPhone into a level which also measures degrees.
https://itunes.apple.com/gb/app/stanley-level/id565961826?mt=8

Miller weld calculator:
https://itunes.apple.com/gb/app/miller-weld-setting-calculator/id452837820?mt=8

Ohm's Law:
https://itunes.apple.com/gb/app/ohms-law/id389305829?mt=8

And finally QuickElement, a periodic table ideal for the pub quiz!!!
https://itunes.apple.com/gb/app/quick-periodic-table-elements/id467937518?mt=8