Re: [Amateur-repairs] Calibrating test equipment?

Mercury batteries used to be good DC voltage standards.  OSHA made certain that resource for a voltage reference became unavailable some decades ago.  

They were still considered a reasonably good standard when I was in college some 55 year ago.

Dave - WØLEV

On Sat, Jul 26, 2025 at 10:12 PM David VK2CZ via groups.io <16240244c1=gmail.com@groups.io> wrote:

Hi Tom,

Fully agree that petrology calibration costs are prohibitive for the average punter.  I use what's called a 'transfer' method to validate voltage measurements. 

 

This involves something as simple as say a lithium button battery, where you physically take that battery to a place that has say a 7.5 digit multimeter, log the reading, then compare it to your own multimeter.. 

 

David Burger VK2CZ 

--

Dave - WØLEV

_._,_._,_

---

Groups.io Links:

You receive all messages sent to this group.

View/Reply Online (#94922) | Reply to Group | Reply to Sender | Mute This Topic | New Topic
Your Subscription | Contact Group Owner | Unsubscribe [jhjoshan@gmail.com]

_._,_._,_