The trial judge has also referred to Lew Wai Loon v PP (supra), for him to consider whether there is a break of the chain of evidence or not with regards to the drugs exhibit. His finding is at paragraph 14 in the grounds of judgment. In that case, the Federal Court decided as follows: “[45] In relation to the differences in the weight given, the respective relevant witnesses gave their versions of the event including the reasons for weighing the drug exhibit. [46] SP9 made it clear that a bag together with the drug exhibit were given to him by SP7 for fingerprint tracing. Upon receipt he used an uncalibrated weighing machine to weigh the drug exhibit. He took the weight in relation to tracing for fingerprint. He learned from a course he attended that the weight of a thing could affect the result in determining fingerprint on it. Thus, the weight he obtained was immaterial in determining the offence the appellant would finally be 15 charged with. Hence, there was actually no necessity for him to explain. Nevertheless, his explanation on the weight issue could be inferred from the fact that he used uncalibrated weighing machine. Further, there was also no challenge that he received the drug exhibit from SP7. [47] As for SP7 he said that he received the drug exhibit from SP1. Again there was no serious challenge on this issue. SP7 weighed them merely to countercheck on the weight as given by SP1. He was not sure whether the weighing machine he used was calibrated. Being the investigating officer it would be necessary for SP7 to know the estimated weight of the drug seized by SP1 as the weight would assist him to determine the nature of the offence committed and the course to take in his investigation of the case. [48] The person who seized the drug exhibit and other items from the appellant was SP1. Before passing the same to SP7 he marked the items seized and he also weighed the drug exhibit, an exercise that was not necessary for him to do. As such the weight he obtained was also immaterial. Thus, there was no necessity for him to explain on the discrepancy between the weight he obtained and the weight obtained by SP3. Nevertheless, the use of uncalibrated weighing machine easily explained for the weight discrepancy. [49] There was no dispute that SP3, the chemist who analysed the seized drug used calibrated weighing machine to determine its weight. [50] Thus, the obvious explanation for the discrepancies in the weight of the drug exhibit as obtained by SP1, SP7 and SP9 was due to their use of uncalibrated weighing machines as compared to the weight obtained by SP3 who used a calibrated weighing machine. And although their explanations might not have been necessary as stated earlier, nevertheless explanation was given or could easily 16 be inferred from their testimonies unlike in Zaifull case where no explanation was available, offered or could be inferred from the facts and circumstances available. In fact, in the present case this weight issue was also considered by the learned trial judge and he ruled that there was no break in the chain of evidence thus rendering the weight issue immaterial in coming to his decision”.