Renishaw, the specialist engineering firm, gets the once over from Tempus in the Times. The Gloucestershire based firm, which makes measuring equipment for production lines, gained 20% yesterday after reporting record half yearly revenues, up 11% over the last six months of 2011 versus 2010.China was weak but Europe and the Americas were both strong, Japan also put in a reasonable performance. Despite some concerns over the medical equipment side of the business, Tempus is persuaded by Renishaw's growth plans and suggests there's more to come. Buy but expect volatility.Tempus also suggests holding 3i Infrastructure, which is offering a 5% yield and has some decent investments in the pipeline, including power interests in Finland. Hold for income says the column.Aegis, the advertising firm, is also given a push after winning the General Motors' media planning and social media contract.BSPlease note: Digital Look provides a round-up of news, tips and information that is impacting share prices and the market. Digital Look cannot take any responsibility for information provided by third parties. This is for your general information only as not intended to be relied upon by users in making an investment decision or any other decision. Please obtain a copy of the relevant publication and carry out your own research before considering acting on any of this information.