■ FIGURE 5. Threading die allows the LCD bezel to
be secured with 2-56 nuts.
voltmeters, they have a flaky mounting scheme.
Figure 5 is a close-up of the front bezel. It has two
REFERENCES
www.martelmeters.com/pdf/V_125.pdf
www1.duracell.com/oem/Pdf/Mn1604.pdf
www.ohmite.com/catalog/pdf/10_series.pdf
plastic mounting posts that accept push-on fasteners. I
broke off one of the posts as I struggled to push on the
first fastener. It was my fault, but there had to be a
better way.
The solution was simple: Buy a 2-56 threading die
from McMaster-Carr. The diameter of the posts just
happens to be real close to a 2-56 screw. By carefully
threading the posts, you can use 2-56 nuts to secure
the LCD. Sweet!
Using a digital ohmmeter, I selected the non-
46
February 2011
