A vintage, Weston Model 45, 0-15 mA meter contained in a wooden box. The square box is 20 cm in dimension and 11.5 cm deep. The meter was manufactured and calibrated in 1945 and displays a calibration date of 3 July 1945. Hence, it would have been among the first electrical equipment purchased for the Chalk River site.. The accuracy is claimed to be 0.5% and the meter was probably used as a calibration standard for other instrumentation at the site.
