Digital Vernier Height Gauge(0-1000Mm) (Part No1B/4512 Na) , Monochromatic Light Source(Part No63A/150 Na) , Weights(20 Mg-100Gms) (Part No63B/0015-1 Na) , Rubidium Frequency Referencestandard(Part No 63D/0010 Na) , Slip Gauge(Metric)Zero Grade(112 Steel Blocks) (Part No 63B/0018 Na) ,Ring Gauge(300Mm) (Part No 1B/0018 Na) Quantity: 7