black scope

black scope

[¦blak ′skōp]
(electronics)
Cathode-ray tube operating at the threshold of luminescence when no video signals are being applied.
References in periodicals archive ?
The crossbow measures about 36 inches long and was sold individually or as part of a package with a black scope, four-arrow quiver and bracket, four arrows, four 150-grain field points and a rope-cocking aid.
Weaver, a traditional name in scopes, offers its V3 1-3x20 matte black scope with extended eye relief that allows the optic to be mounted farther forward on the slug gun.
The Black scopes are fully functional with Nikon's excellent Spot-On ballistic calculator that runs on any computer or smart phone.