TY - JOUR AB - This tester is a portable item of test equipment for checking both pressure and vacuum systems at positive and negative pressures within the range of 1 lb./sq. in. absolute to 115 lb./sq. in. absolute, i.e. negative pressures 0–30 in. Hg and positive pressures 0–100 lb./sq. in. VL - 31 IS - 5 SN - 0002-2667 DO - 10.1108/eb033118 UR - https://doi.org/10.1108/eb033118 PY - 1959 Y1 - 1959/01/01 TI - Research and Test Apparatus T2 - Aircraft Engineering and Aerospace Technology PB - MCB UP Ltd SP - 151 EP - 151 Y2 - 2024/04/24 ER -