VARI-TECH

AMPLIFIERS [ , DIFFERENTIAL AMPLIFIERS, AUDIO-AMPLIFIERS, ] AND PHOTO-ELECTRIC EQUIPMENT FOR SENSING CHANGES IN THE POSITION OF A LIGHT BEAM AND PROVIDING ELECTRICAL SIGNALS REPRESENTATIVE OF SUCH CHANGES

[ DYNAMIC TESTING APPARATUS FOR ELASTOMERIC SUBSTANCES, ] AMPERE-HOUR RECORDERS [ ,ELECTRO-MECHANICAL TIMER CONTROLS FOR TOSS BOMBS, WEIGHT-RESPONSIVE CONTROL EQUIPMENT FOR THE FILLING OF HAMS WITH A SELECTABLE PERCENTAGE OF CURING SUBSTANCES, ] HYDRAULIC DIFFERENTIAL PRESSURE SWITCHES [ , SWITCHING MODULES EMBODYING SOLID STATE CONTROL LOGIC, AND RESISTANCE TESTERS ]