Trammel Heads, Allen Wrench/Soapstone/Scribe ORS NASCO radiation|Good blue light protection|Decreases total

Trammel Heads, Allen Wrench Soapstone Scribe ORS NASCO radiation Good blue light protection Decreases total radiation Good blue light protection Decreases total light from welding arc Good visibility into higher amperage welding areas For medium to medium high amperage in electric arc welding Contrasting color coded dial is graduated in 100ths and 64ths with inch and mm on bar scale Fractional conversion table on back Heads feature radius set points cast in alignment with marking pointer for easy setting Equipped with 1 4 in screws and squared on back for perpendicular alignment Stationary head holds 1 4 in case hardened center point