What's the oldest tech you still use on a regular basis?

[MazoMark]

We go crazy over the newest, shiniest hardware or latest software release, but what is one piece of tech that you have relied on the longest?

 

[gozirra]

I have a timing light from 1979, still going strong.

 

[Jims S5]

Still using a pair of EPI'S
(speakers) from late 70's.
My front channels for surround sound. Crystal clear sound.

 

[robk84]

Wrist watch, Waltham circa 1917.

 

[Laura Knotek]

Wrist watch, Waltham circa 1917.

I have a pocket watch older than that. My 18 size, 21 jewel Elgin-Ball Railroad Standard watch is ca 1903.

 

[Guytronic]

I still have a Sony ATRAC mini-disc player (MZ-R10) that I love to fiddle with.

 

[Jerry Hildenbrand]

Relied on?

1969 Chevy shortbed.

A more techy thing in use every day is a really ****ty 286 single-board-computer I scavenged from work 10 or so years ago. It runs a very small IP firewall based on Minix 2.0 (the OS is on a floppy disk lol) that I needed at one point, but left in place because I'm lazy.