Accessory for carpenter levels

Automatic lighted level and angle finder

Compass having a fiber optic output

Compass with LED illumination

Cross vial liquid bubble illuminated level

Electronic compass for automotive vehicles

Fiber optic position indicator using liquid/air light transmissi

Frame-setting apparatus

Hand-held needleless compass

Horizontal plane viewable precision bubble level

Illuminated level

Illuminated level

Illuminated spirit level

Illuminated spirit level

Illuminated spirit level

Illuminated spirit level using fiber optic devices

Illuminated spirit vial and level

Illuminating device for a magnetic compass

Level

Level indicating devices