Hi Harold,
I'm the 2nd owner. The only time it was used since I bought it is when Tom tuned it.
I'll post pictures later but not today Taking the wife out for her day today.
Depth is stated in Tom's report below.
Thanks,
El
Tom's Report
Hi El,
Okay............. just finished most of the calibration/validation of your unit. In a nutshell:
1) 'Salt' balance was slightly out-of-cal........ and is now back in spec's.
2) Deep target audio smear non-existent....... no correction needed.
3) I boosted 'Salt' mode auto-tune/all-metal Sens a bit more.
4) I stabilized the electronics to a greater level of stability.
5) 'Salt' nickel ID was slightly out of spec's....... and is now back in spec's.
6) 'Salt' zinc ID was exacting...... no calibration necessary.
7) Grnd Bal internal set-point was slightly out of cal..... and is now in spec's.

'Enhance' mode nickel ID was a bit zealous...... and is now per engineering design.
9) 'Enhance' mode zinc ID was exacting...... no calibration needed.
10) 'Enhance' auto-tune/all-metal Sens was boosted about 0.2" more.
11) Sens knob was loose....... and is now tight.
12) Unit was 11.7" on a clad dime in 'enhance' mode. Unit is now 11.9" on a clad dime in 'enhance' mode.
13) One internal ckt board was a bit loose...... and is now tight.
14) Audio boost circuitry is exacting......... needing no calibration.
This is a good stable unit. Wear it out!!!! I would like to convey to you how 'rare' these 'good/proper' CZ-3D's are getting. Hold on to it!
I have just a couple more verify's/check's on your unit....... then it will be complete. Will advise.
Sincerely,
Tom