Acceleration aided tracking of a designated target

Access authenticating system

Access control system

Access controller and system

Acid-base equilibrium slide-rule

Adjustable coding reflector

Advanced gestational wheel calculator

Aim control arrangement for conveyor installations

Aiming device for firing on movable targets

Aircraft descent profile calculator

Aircraft flight computer

Alcoholic concentration indicator

Aliquot part locator

Analog balance

Animal food consumption monitor

Apparatus and a method for reading light-dark or color-contrast

Apparatus and method for calculating break-even point of enterpr

Apparatus and method for calculating vehicle movement parameters

Apparatus and method for schedule monitoring and control

Apparatus and method for the synchronous reading of data from a