What's the difference between Type A and Type H?
The short quick answer is Not Much.
These differences are very small and normally do not effect the usage in any way.


 
Type A
  
Type H
Molded with 2 mold halfs. The result is a bevel or small step where the dome meets the flat back. The cab has a smooth feel all around.
  
Molded with 1 mold half. This results in a sharp transition from the dome to the flat surface. The cab has a sharp feel all around.



300%
Magnification