Enclosure for geiger counter by impexeris with SI8B tube

This is a case for impexeris Geiger counter kit.
Adapted for SI8B tube

It is my second design with Fusion 360.

I added a lithium-ion battery with charger (held by double-sided foam tape)
https://fr.aliexpress.com/item/Au-lithium-Li-ion-18650-3-7-v-4-2-v-Batterie-Chargeur-Conseil-DC-DC/32896329217.html

I used this switch for power on/off:
https://fr.aliexpress.com/store/product/2-pcs-lot-Micro-Verrouillage-auto-verrouillage-SUR-OFF-Bouton-Poussoir-Pour-La-Voiture-Bateau-12mm/2948266_