Segmented, combination level and square having a rotating joint

Segmented, combination level and square having a rotating joint

Seismic marsh T-coupler with removable polarized connectors

Selectible beam/plane projecting laser and alignment system

Selection element housing for incremental measuring apparatus

Selective electrical connection device

Selective electrical connections among wires of different diamet

Selective interconnection system and connector

Self adjusting inclinometer

Self aligning optical gun sight mount with eccentric adjustment

Self calibration circuit for determining an accurate zero...

Self centering pipe axis laser guide

Self centering pipe axis laser guide and saddle

Self centering sight mount

Self contained quick reacting wide angle gyrocompassing

Self holding leveling square

Self holding tape measure

Self latching and unlatching connector assembly

Self leveling device

Self locking coupling device