The best way to check this critical dimension is with a Lyman case length/headspace gauge

Eye Relief (mm): 15

A functional assortment for short treks and weekends which includes 40 carefully selected components contained in a zippered

Detachable shoulder carry strap

Vortex Diamondback HD 15x56 Binoculars B&F The best way to checkVortex Diamondback HD 15x56 Binoculars Power and clarity. Its what you need to glass open country effectively and its what you get from the Diamondback HD 15x56 binoculars, a new configuration with enough optical strength and HD clarity to replace a spotter in your pack. With the superior image resolution and improved light transmission of an HD powered system, youll see every detail from first light to last. And, thanks to the lightweight and durable