Sapphire is an analog altimeter produced by Autrian company Robnik.

Features:
- Stainless steel axles and pinion
- Bearings are made from sapphire - and won't wear out like brass bearings
- Large dial - with superior readability
- Filtered air inlet - to keep dust out
- High shock resistance
- Lens easy to replace

Sapphire is available with elastic or ring mounting.