315: Difference between revisions

69 bytes added ,  21 April 2010
no edit summary
No edit summary
No edit summary
Line 2: Line 2:
3-inch CRTs and are mechanically similar to early 500-series monolithic scopes such as the 511A.
3-inch CRTs and are mechanically similar to early 500-series monolithic scopes such as the 511A.
The scope slides out of the case instead of having removable side covers as were used in the 53x,
The scope slides out of the case instead of having removable side covers as were used in the 53x,
54x, 55x, 56x, 57x, and 58x designs.  What is the difference between the 315 and the 315D?  Were
54x, 55x, 56x, 57x, and 58x designs.  A rackmount version, the 315R is seen in the March 1956 catalog. 
any 315 scopes made, or only 315D?   
 
What is the difference between the 315 and the 315D?   
Were any 315 scopes made, or only 315D?