Contech Instruments Ltd manufactures High Precision Metrological Standard Weights and Weight Box. Contech Instruments Ltd is an ISO 9001: 2008 certified company. The Company also manufactures various types of laboratory balances, moisture balances, gem and jewellery balances, super market scales, health scales, industrial scales, crane scales,ÿelectronic weighbridges, scales for special applications, etc.The High Precision Metrological Standard Weights and Weight Box are either made of stainless steel, austenite alloy or brass material. The loose Weights are available up to 20 kg and the weight box has weights in the range of 1mg to 200 g. This Weight Box has M1, E1, E2, F1, F2ÿclass weights.