Oldest tool you regularly use?

[D60]

I guess it would be this Schumacher battery charger I got from my dad. 100% metal case and very heavy for a 6/2 charger. It does, however, have a plastic strap handle at the top which recently broke. I'm guessing mid '70s to mid '80s? It does have a three-prong power cord. @Trav has seen a thing or two and might have a guess.

Made in US so that's kinda cool:

 

[jhellwig]

Klein lineman's pliers bought by my father when he started out in the trade in the 80's.

I don't use them any more but in 2001 I used my Great Grandpa's Klein lineman's from the 20's or 30's when he was working for the REC in Nebraska. I did an internship for the REC after highschool and cut a lot of 6 gauge solid copper while dressing poles and installing underground services. They really make you appreciate the high leverage ones.

I have my Grandpas Craftsman ratchets and SK sockets from the 50s or 60s I use at home. They came from the local Gambles store.

 

[Starving Electrician]

Nice I'm a professional industrial controls technician. I fix upkeep install and troubleshoot machinery controls for the world's largest diversified wood products company. So I use my Kleins fairly regularly still the same set my dad used his whole career. When my son turns 18 I'm going to give them to him. If he goes into the trades or not so that he remembers to respect honest men that do honest work.

 

[Starving Electrician]

I don't use them any more but in 2001 I used my Great Grandpa's Klein lineman's from the 20's or 30's when he was working for the REC in Nebraska. I did an internship for the REC after highschool and cut a lot of 6 gauge solid copper while dressing poles and installing underground services. They really make you appreciate the high leverage ones.

I have my Grandpas Craftsman ratchets and SK sockets from the 50s or 60s I use at home. They came from the local Gambles store.

Nice I'm a professional industrial controls technician. I fix upkeep install and troubleshoot machinery controls for the world's largest diversified wood products company. So I use my Kleins fairly regularly still the same set my dad used his whole career. When my son turns 18 I'm going to give them to him. If he goes into the trades or not so that he remembers to respect honest men that do honest work. Meant to respond to yoh in the first post.