Thanks for your help Cliff - much appreciated. It is quite small - in fact smaller than the smallest Better Beamer which is 40.6mm high. I will have to modify it so that it fits.
Nature photographer - Photographe de la nature
|Bald Eagle by anisah|
from Features - lips/mouth
|heron and fish by APenza|
from A Big Year - birds
|Cows Cowering Under Rare California Super Cell by RBFresno|
from -The Old Cows-