On Sun, 17 Jun 2018 18:53:15 +0100, Harry Bloomfield wrote:

How about a mortar and pestle, to powder the pills, then split the
powder by eye into 5 portions. Take 3 (=30%), or 4 (=40%).

Eyeballing is surprisingly inaccurate! I have tried it and it doesn't
work anything like well enough.

Another way, might be to crush as above, then use a pair of those scales
that druggies use, to measure the dose accurately. The scales are less
than a tenner a pair from China.

Yup. Got one of those that states it's good down to 1 mg. They are pretty
amazing for the price, but are out of their depth at such sub-
featherweights. You have to bear in mind that 2.5mg of these tablets is
not 2.5mg of diazepam; most of the weight in a pill comes from the inert
bulking agents they use.