# Psychological precision...

#### Yaakov

Joined Jan 27, 2019
3,768

I find that if I have to adjust, say, a power supply to 2V, I am more comfortable seeing 2.009V on the display than 1.999.

This makes no rational sense as it is further from the target, and in practice it is unlikely to make any difference, but somehow I want to see that 2 on the display.

Do you have this feeling?

#### ZCochran98

Joined Jul 24, 2018
181
Yes. Absolutely. I will spend a good 5-10 minutes fiddling with dials until it says exactly the value I want (to the precision of the screen, anyway).

Edit: but if it's off a bit, I'm happier to see it slightly higher than slightly lower.

#### MrChips

Joined Oct 2, 2009
24,650
Never crossed my mind.
Don't sweat the small stuff, I say.

#### DickCappels

Joined Aug 21, 2008
8,000
Either is fine.

#### bogosort

Joined Sep 24, 2011
678
I find that if I have to adjust, say, a power supply to 2V, I am more comfortable seeing 2.009V on the display than 1.999.
Same phenomenon that drives merchants to sell an item for $1.99 instead of$2.00, perhaps slightly amplified by the knowledge that a voltage supply will sag rather than increase under load.

#### Delta Prime

Joined Nov 15, 2019
1,196
I often use four or more meters simultaneously a critical nodes in the circuit, tinkering with the resolution to my preference, particularly before the process, of acceptance testing at a third parties facility. Time consuming yes on the front-end on the back-end, calibration procedural base documentation. worth it. Only if the
darn thing passes .