the original Mettler H72/H78 manual, english part only, scanned to pdf:
H72 manual (pdf) (3.0 MB)
H72 is an excellent piece of precision weight measurement equipment
(0.1mg resolution, linearity: 0.2mg over 160g range) manufactured by
Mettler. Production stopped in 1977. But this equipment is anything but
outdated! Good chances you can obtain one at an online marketplace or
so. Easy-to-use (once you know how), probably reasonable affordable and
After obtaining a H72 (well, in fact
maybe i can get/trade it), I've been searching the internet for such
document but unfortunately found none. But, i was lucky and was handed
a copy of the original manual, i decided to scan it and put it online. Hope
Mettler (nowadays Mettler-Toledo) won't mind because after all the
document is copyrighted by them, but it seems they've lost the last
copy themselves (at least, i cannot find it on their website).
scan is made with 300dpi, 8bpp and converted to pdf by HP
software. So it is a bit large but i tried to keep the photographs as
detailed as possible. They are black/white and have a little high
contrast (which i left as-is) but to me it seems very reasonable.
care to all steps when installing the device. Make sure you tighten
everything again (in about the reverse order as untightening) before
transporting the device. Transporting it without mounting may in the
worst case cause severe damage, and in the best case make a mess of the
inner workings which can only be corrected if you are very experienced
and/or have a second working device.
sure the device is 100% leveled (use the level indicator at the top).
The device is _very_ sensitive to vibrations. Walking on the floor if
the floor is not perfect solid,for example, but also vibrations from
other devices (motors etc, even computer fans!). Avoid
One last hint: If you are unsure how to
open the #$^(* thing, try to just
gently lifting the top plate,
it is not tightened with screws but hold in place with (air-'tight')
rubber strips (to avoid dust). Side plate almost dito, you can easily
remove the knob by pulling.