Communication using visible wave-lengths.

Marking flashers and strobe-lights.

Collection of different brands > avimarltd.tripod.com

Pyrotechnics.

Collection of different brands > avimarltd.tripod.com

Special light-sources.

• 'Acr Hemi' water activated light 1916 > avimarltd.tripod.com
• 'Aquaspec Aq180 lightbuoy light > http://www.mailspeedmarine.com
• 'McMurco' life-jacket light > avimarltd.tripod.com

Communication using invisible wave-lengths.

Portable Locater Beacon.

• Elt-system easy aircraft personal portable locater beacon > avimarltd.tripod.com

'EPIRB-s'

Collection of different brands of Gmdss float-free satellite emergency positioning radio beacons > avimarltd.tripod.com

Radios (VHF-UHF).

Collection of different brands of radios > avimarltd.tripod.com

GPS.

Collection of different brands of global positioning systems > avimarltd.tripod.com

Infrared._

'Tlx' thermal imager > avimarltd.tripod.com

X-ray.

'Scantrak' digital portable x-ray system and generator > avimarltd.tripod.com

Radar-reflectors.

• 'Mca' inflatable radar-reflector > avimarltd.tripod.com
• same of unknown brand.

Using sound

• 'Howller' alarm, creates 110 dBa at 10 feet > http://www.lifesaving.com

Fog-goggles and blower.

• 'Sparkler' anti-fog-goggles > http://www.lifesaving.com
• 'Ramfan-gf210', blower > avimarltd.tripod.com

Super-specs.

• Dr. William Feinblooms glasses magnify 18x > http://blog.modernmechanix.com/

Telestereoscope.

• Cassidy Curtis and Chris Whitney made this for the Burning Man festival in 2000 > http://eyestilts.com/

Binoculars.

• Clive Milne's 510mm diameter f5 binocular telescope > http://deepsky.cia.com.au

Co-garph.

• Australian invention makes maps of the ground it covers > http://blog.modernmechanix.com/

SWAN

• System for wearable audio navigation, the Georgia institute of technology > http://www.gatech.edu/news-room/release.php?id=1090