58mm (21/4) Diameter Dial Easy Read Dial Gauges and DTIs are designed for countless applications and available in two basic styles. With shockproof mechanisms and clear, Easy Read dial for zero setting. All models are operational in both directions. Supplied in fitted cases with accessories storage space. Matt finish chromed housings and black oxidised limit hands. Fitted with 1/4 inside diameter centre back lug and 5/16 diameter stem. Manufactured to BS 907.