The sand timer hourglass is sometimes referred to as a sand clock or a sandglass. Like other timepieces, it needs to be carefully calibrated. The hourglass maker must test the instrument and fine tune it to measure the correct length of time.http://www.skyringecraft.com/sand-timer-hourglass/

Historically, the SGS of a cement slurry was determined by a method using a couette-type rotational viscometer. Today, more specialized instruments have been developed that allow the measurements to be done under conditions of high temperature and pressure.http://www.skyray-instruments.....net/construction-mat

Keeping the objective in mind, a general purpose (GP) grease is used as a multi-application grease in a production process to reduce complexity and the potential for component failure due to misapplication. Consider the following operational characteristics when selecting the GP grease.http://www.sino-grease.com/general-purpose-grease/

If you purchase extra batteries and want to transport them, it would be a good idea to get a battery bag. There are added concerns when transporting loose LiPo batteries, so a battery bag that is fireproof will help you transport them with confidence that you’re not going to start a fire.http://www.satuav.com/

The challenge of characterising the primary particle characteristics of single components within multi-component systems has recently been addressed through the application of image-based particle characterisation with integrated Raman capability.http://www.nmn-bio.com/intermediate-api/