Need Manual for Nordmende DIVO 3355 Voltmeter

[gufka]

Hello,

I need a manual for my vintage (70's) Nordmende DIVO 3355 Multimeter (Volts, Amps, Ohms, with Nixie tubes as display device) since mine isn't very precise and needs recalibration.

I already found the manual for the predecessor, the DIVO 3354, but it is quite different to my device. Nordmende seems to include the details on calibration into the normal user manuals. Several sites including user-manuals.com seem to sell the manual for the 3355 in PDF, but these sites don't seem very reputable to me.

Thanks in advance for any help obtaining the manual
gufka