These extenable dowsing rods are perfect for travelling with because they are light weight and can fit easily into your shirt pocket like a ballpoint pen. When you are ready to dowse, simply extend the telescopic arm out and bend it at the joint where it connects with the handle. You can set the length of the rod arms to where you feel comfortable. Why disguise dowsing rods as a pens? So you can dowse without attracting unwanted attention of course. This disguise may also come in handy if you want to dowse secret-agent-style in a resricted area like a church or cathedral. Rods come in pairs along with an attractive red velvet bag. 
 
Dimensions:
15cm long in it's pen form.
Rod arm length is 42cm in it's expanded form.