Data Acquisition Systems & Amplifiers: http://www.hbm.com/data/softdoc/hbm/data/s0729.pdf

Strain Gages and accessories (64pages): http://www.hbm.com/data/softdoc/hbm/data/cat_SG_e.pdf

Spider8 - the friendly alternative for PC-based measurement: http://www.hbm.com/data/softdoc/hbm/data/B0409.PDF