I am working on a voltmeter and the tolerance for it is 0.25% ∀ 1 digit. I am not sure what exactly what this means. I am guessing if my value was 19.95 'for all' could mean I have a range of 19.94 and 19.96?enter image description here


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    \$\begingroup\$ You can write it as the HTML entity ∀ -- except in titles and comments, where you must paste the actual character: ∀ \$\endgroup\$ – Dave Tweed Jun 11 at 19:08

That sounds like some kind of a font encoding error. A typical spec is 0.25% + 1 digit.

So a 19.95 input could read 19.80 to 20.01.

We often see a font error in pdf files where \$\Omega\$ is intended but it comes out as a W.

Edit: With enough of the manual now presented to access it on the net, we can come to a conclusion. As Dave Tweed suggested in a comment, it's from ±. The previous version to the current manual (3.2 vs. 4.0b) has the correct character.

enter image description here

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    \$\begingroup\$ ... or perhaps 0.25% ± 1 digit (HTML entity ±) \$\endgroup\$ – Dave Tweed Jun 11 at 19:07
  • \$\begingroup\$ @DaveTweed Bingo. Previous version has ±. \$\endgroup\$ – Spehro Pefhany Jun 11 at 20:24

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