Curtis Industries 5-Step block Curtis industries| Curtis Industries 5-Step block Print Curtis industries| Curtis Industries 5-Step block 5-step calibration block for thickness and linearity calibration. 9.53cm L x 1.91cm l (3.75"L x 0.75"W); in 0.25cm to 1.27cm H (0.100" to 0.500"H) increments. Standard materials available: Aluminum (7075), Stainless (304) and Steel (1018). Special materials also available: Aluminium (2024, 6061), Brass, Copper, Cupro-Nickel, Hastelloy (C or X), Inconel (600 or 625), Monel 400, Nickel, Stainless (316 or 321), Steel 4340, Titanium, Titanium 6/4 and Zirconium. QXX-5053: 5-step block, steel 1018, with certificate - 0.25cm to 1.27cm (0.1" to 0.5"). QXX-5053-1: 5-step block, steel 1018 metric, with certificate - 0.25cm to 1.27cm (0.1" to 0.5"). QXX-5054: 5-step block, 7075 aluminum, with certificate - 0.25cm to 1.27cm (0.1" to 0.5"). QXX-5056: 5-step block, 304 stainless, with certificate - 0.25cm to 1.27cm (0.1" to 0.5"). Option HC-SB: Standard hardwood case for step blocks. Request for information