Leica Disto A3 The Disto the device is designed for.
Stabila LE 50 An alternative to the A3. Contains the same internal hardware as the A3 and is compatible with the DistoX kit. However, the case is somewhat smaller and there is hardly sufficient space to route the wires.
TLM 200 Another ‘clone’ of the A3. Using the TLM200 instead of the A3 is possible but not recommended because of its poorer quality and limited functionality.
RPDA 696 My favorite PDA. An Asus
Mypal 696 repackaged into a ruggedized case by a German company.
The optional 3Ah battery lasts for several days.
HP iPAQ 114 Cheap and small. The only drawback is the relatively short battery lifetime.
There are larger batteries available:
TDS Recon Robust and reliable but expensive outdoor PDAs.
PalmCase micro The perfect case for the iPAQ 114! Fits well with original or large batteries.
Otterbox Robust and perfectly waterproof. Cannot be used with the iPaq 114 and others which have the on/off switch on the side of the device. Good for older PDAs.
Aquapac Cheap and proven. Attaches smoothly to the screen and allows easy drawing. Good and economical solution for the iPAQ 114.
Dräcksack Protective covers for anything used in cave. Made by a Swiss caver from second hand materials. Special padded bags for Distos and PDAs are available.
Auriga Cave survey software running on Palm OS devices.
SAP An electronic compass/clinometer with Laser pointer (but no Disto), LED display, USB interface, and rechargeable Li-ion battery.
DUSI An electronic compass/clinometer with Laser pointer (but no Disto), LCD display, Keypad, USB interface, and rechargeable Li-ion battery.
CaveSniper An electronic compass/clinometer with Laser pointer, display, waterproof button, rechargeable Li-ion battery, and Bluetooth connection. A separate Bluetooth connected Leica Disto A6 is used to measure distance.