Clarke ET135 12″ Engineers Rule Description A standard 300mm Stainless Steel measure for the precision engineer. £12.54 In stock Clarke ET135 12" Engineers Rule quantity Add to basket EAN: 5016086101680 SKU: 1700295 Category: Engineering Hand Tools - Measuring Equipment Description Specification Manufactured from stainless steel Calibrations etched in imperial and metric. Related products Clarke CM190 Micrometer £20.16 Clarke PRO325 24†Breaker Bar – 1/2†Drive £25.45 Clarke CM145 Digital Vernier Caliper £29.66 Clarke CHT625 Combintation Try Square £17.20