TY - JOUR
AU - Ltd., Johnson Matthey and Co.
AB - NOTES AND NEWS New instruments, materials and tools The Mitor invites manufacturers of instruments and light machine tools to keep him informed of their new or improved products. The Institute of Physics assumes no responsibility for the statements given below: information for these has been taken from literature supplied. Ballistic fjh analyser and recorder. Benson-Lehner Cor- binocular bodies may be fitted and there is a choice of two poration, 2340 Sawtelle Boulevard, Los Angeles 64, binocular bodies, one with parallel eye-tubes or one with California. converging eye-tubes. A novel means of obliquely iiluminat- A machine for the semi-automatic measurement of the ing the object can be supplied which is said to give three position of a reference mark in Cartesian co-ordinates is times more light for a given obliquity of illumination than known as the Boscar Model A. One of its applications is that given by the more usual method of decentring the sub- the analysis of ballistic film records such as boresight data. stage ins diaphragm. The device consists of three bronze It consists of a projector, a viewing screen and a control and leaves which are rotated about a common axis at one end of measuring system. 
TI - Silvered mica capacitors
JF - Journal of Scientific Instruments
DO - 10.1088/0950-7671/32/2/421
DA - 1955-02-01
UR - https://www.deepdyve.com/lp/iop-publishing/silvered-mica-capacitors-C7KBe5ZsDp
SP - 80
VL - 32
IS - 2
DP - DeepDyve
ER -