Toledo S Steel Rule 300mm ALRS94R Tweeter features an acoustic lens

Tweeter features an acoustic lens specifically designed to ensure an extremely linear frequency response

15 degree points are also available

6526MM 26 Piece Ring+Open End Spanner Set In Wallet Chrome vanadium

it contains anti-rust additives to ensure that chassis does not rust

Toledo S Steel Rule 300mm ALRS94R Tweeter features an acoustic lens300MESE STAINLESS STEEL RULE DOUBLE SIDED METRIC & IMPERIAL 300MMDouble sided with graduations on both upper and lower edgesNumerical markings on front side on upper and lower edges and in centreNumerical markings on reverse side in centre onlyTwo square endsNo quiet space complete rule is graduatedSee images for further explanation of markings and graduationsManufactured from stainless steelLength: 12 inchWidth: 28mmThickness: 1. 0mmGraduation front