NPS 400mm f5.9 for M42 brand_Gossen This is a focus scope

This is a focus scope for use with darkroom enlargers- essential (or at least extremely useful) to ensure correct focus when printing

but pretty capable

Compact and high quality

Its also got a fun discreet interior compartment in the top portion of the case

very dependent on which laptop you've got: Peak Design says 1

NPS 400mm f5.9 for M42 brand_Gossen This is a focus scopeThis is a simple (but large) telephoto lens for the M42 thread mount. In the old tradition of simple telephoto lenses, close focusing distance is 18 feet, and best performance will not be had at f5. 9. But, theres a tripod mounting collar, the glass is clean, and focusing is smooth. The mount is even interchangeable (its a T mount)