160-A, 160M-A Micrometer & Adapter
Put a 160 Series micrometer on an alignment telescope
The 160M-A (metric units) consists of a 160M micrometer combined with the same adapter.
Note: The 160-A has been assigned a national stock number of: NSN 6650-01-542-7154RN.
Below, the 160-A as installed on a Brunson-style alignment telescope.