An engineering hardware display, slide-tape show, selected readings, and tests are used to help students become familiar with values, fitting, tools, and instruments. Sample exam questions and a list of hardware are given. (BB)

Describes a device for converting LED digital displays to large-scale displays. (SL)

Describes a device to detect flooding by broken water apparatus and to properly shut off the apparatus and water flow. (SL)

Describes the modification of a transistor radio to make an audio oscillator. (SL)

Brief suggestions on science laboratory and classroom labor-saving techniques are provided. (CP)

Describes two simple, economic timers suitable for measuring time intervals with fractional millisecond resolution in physics experiments. (MLH)

Describes a recording gas microvolumeter constructed to carry out sensitive studies of the kinetics of photodecomposition of water. (SL)

Describes multifunctional instruments which combine the functions of power supplies, amplifiers, oscillators, and various switching circuits. (SL)

Describes d.c. amplifiers available through English manufacturers and laboratory experiments which can be performed with them. (SL)

Describes physics laboratory equipment including: circuit improvements for an electronic counter-timer, a commercial counter-timer-frequency meter, and a device for demonstrating resonating air columns. (SL)

Describes an inexpensive device for students to measure Planck's constant using the photoelectric effect. (SL)

Reviews new instruments, new literature, and new chemicals advertised in this issue of their journal. (SL)

Describes apparatus for electrostatic painting and two different Foucault pendulum demonstrations. (SL)

Describes a method for modifying a four-function pocket calculator so that it can be used as a pulse counter. (SL)

Provides the theory behind the construction of a classroom seismograph. Data obtained from such a device is presented. (CP)