I realise that the case itself and the onsite experiments you wish to do should dictate the equipment you take on an investigation. However, I have come across groups who bring along all the gadgets they have and think the more high tech a piece of equipment is, the more scientific it makes them appear.
So, my question is, what equipment do you use and why? Also, what items don't you use no matter what and again why?
For instance, I'd include a camera, usually a digital model. This is primarily to record the location visually, such as room layouts etc. I don't try to chase orbs and I don't expect to catch a ghost in a photograph, though if the opportunity arises and I see an appartion walking along I will endeavour to take it's picture.
Oui Ja boards I wouldn't use, regardless of what they are made of or model as it smacks of pseudoscience.
So, what do you use? Thermal Imaging Equipment, Infra Red Camera's, Night Vision Scopes, Video Cameras, EMF Meters, Interdimensional Portals?