Today I've done a quick check on my existing DMMs. Absolute interesting - all three multimeter are showing an excellent accuracy compared to each other - independent of their age!

The candidates

An old Nordmende -TR-6355 Nordmende1 which basically was manufactured by Takeda Riken in Japan. This one is for sale here.

An old FLUKE 12 FLUKE12

and a freshly calibrated FLUKE 289 FLUKE289

The numbers

 
Fluke 289 Nordmende
TR6355
Fluke 12 Comment
 2.2527 V  2.25 V  2,25 V
 0.29876 V  0.298 V  0.299 V
 16.787 V  16.78 V  16.79 V
 40.993 V  40.9 V  41.0 V
 49.694 V  49.6 V  49.7 V
23.677 mA 23.7 mA n.a. The Fluke 12 has no current measurement capability
56.63 mA 56.7 mA n.a.
1.047 A 1.05 A n.a.
2.01 Ohm 1.9 Ohm 2.2 Ohm
508.32 Ohm 507 Ohm 509 Ohm
4.673 kOhm 4.64 kOhm 4.68 kOhm
462.6 kOhm 460 kOhm 463 KOhm

 As can be seen in the numbers, even the old Nordmende DMM shows an excellent accuracy - not more than +-2 digits compared to the Fluke 289 - excellent these guys have used first-class components - lets see, how the new Fluke behaves after such a long time!

 

2014 CW (Morse Telegraphy) was added to the German Nationwide Inventory of Intangible Cultural Heritage.

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