Not being the sharpest tack in the box, I need some help !
A.I Root , ABC-XYZ 1983 Edition
Pollen traps
p. 515 & 516 trap diagrams, both show
" 3/16 diam. holes, 51 % open "
{ I don't believe this means 51 % holes open & 49 % closed, If that is it, why would you drill the extra 49 % holes to close them off ??? }
Could someone who has this book and would check, give me their interpertation of this plan.
Thanks for your time and consideration
Bee-Bop