You may want to investigate using calipers since they're a lifesaver when it comes to measure small doses consistently. These are great - easy to use and lightweight:
https://www.harborfreight.com/hand-...rs-micrometer/4-in-digital-caliper-63710.html
Hi again Sue,
Wow, this is interesting - not sure how you use the calipers, but maybe you could drop me a description?
I'm using BD 3/10ml syringes with half unit markings as his vet started him on a half unit b.i.d.
My biggest challenge when I am trying to approximate a quarter unit, like today, is jiggling the black rubber/silicone end of the plunger to the right place... for whatever reason, these syringes do not have the smoothest gliding motion - they're kind of 'balky' or 'sticky'. I'm not sure if that is particular to the BD brand, or all small syringes...
I have read the material available on the board, with photos, of doing smaller doses.
I wish there was a smaller barrel syringe that could be adapted for use so that the volume of insulin in the barrel took up more space, if that makes sense.
A quarter unit is probably 1 or 2 mms on these syringes.
As far as getting my feet wet, I have to say, today was a rough day, which I am sure everyone goes through, but I feel like I am fumbling in the dark, and it upsets me when he is obviously not feeling well, like this aft.
I tell myself I am doing my best, trying to educate myself, following instructions and suggestions, and primarily being responsible, but I felt lost today.
I don't want to appear needy or greedy, but I sure look forward to every response I get on this message board.
The vet clinic is annoying too... sometimes bigger is not better, I think.
Hopefully tomorrow is a better day.

Some time if you have a minute, let me know how you use those calipers... I may I have something similar here in the house already.
Thanks
Laura