Vacuum Techniques Pvt. Ltd. Manufactures Digital Penning Gauge with Alpha Numerical Display of Status. Vacuum Techniques Pvt. Ltd. Is an ISO 9001:2000 certified company. Vacuum Techniques Pvt. Ltd. Offers Vacuum Instruments, Vacuum Components, and Custom Built Systems. The Digital Penning Gauge with Alpha Numerical Display of Status of Model No.VT-DP-02 is a highly reliable Microprocessor based Digital Penning Gauge and covers from 1x10-3 mbar to 1x10-6 mbar range of vacuum and it consists of set point controller, automatic range change etc.,