I recently bought this small tape measure. Since then I have always had this in bag. It has come in handy several times. Highly recommend [Stanley Fatmax Keychain 2m] : r/EDC
XMS14TAPE2 Stanley 2m FatMax Keyring Tape £1.99 - YouTube
Stanley FMHT33706W Fat Max Keychain Tape Rule, 1/2-Inch by 6-Feet - Hand Threading Taps - Amazon.com
Stanley FMHT1-33856 1-33-856 STA133856 2m Mini Tape Measure Key Chain Keyring
Stanley FMHT1-33856 FatMax Keychain Tape - 2m | Wickes.co.uk