A digital Lens Thickness gauge is for measuring the sagittal depth and thickness of a lens, which comprises of an encoder for deriving electrical signals corresponding to the saggital depth and thickness of the lens, a first digital circuit responsive to the electrical signals corresponding to the sagittal depth of the lens for producing a first digital output representing the sagittal depth, a second digital circuit responsive to the electrical signals corresponding to the thickness of the lens for producing a second digital output representing the thickness, and a display unit responsive to the first and second digital outputs for displaying the sagittal depth and thickness, respectively, of the lens.

Digital Lightmeters features analog output standard, digital & analog output function, 3 1/2 digit LCD display with a maximum reading, peak data hold function and backlit LCD display.

Digital Low Resistance Ohmmeters measures resistance by measuring the amount of voltage drop across an unknown resistance. It generally exhibits an accuracy of about ±1%. In generators or motors, when breakage or distortion of damper bars occurs due to over speed or abnormal thermal gradients between bars and the connecting end rings, it causes difficulty to observe in machines that have operated in contaminated conditions and usually occur near the end ring or at the end of the pole piece. This can be detected by low resistance measurements between bars and end ring by means of digital low resistance ohmmeter.

Digital Manometer is used to measure gas pressures. It can measure both positive and negative pressures in inches of water column. One advantage of a digital manometer is that there is no fluid to spill. Another advantage is that the pressure reading appears without the service technician having to measure a difference in height.