Quick view AEMC Digital Transformer Ratiometer 8500 AEMC 230V 2116.32 Digital Transformer Ratiometer 8500 AEMC 230V 2116.32 The DTR Model 8500 from AEMC Instruments is a portable digital transformer ratiometer designed for on-site testing of power, potential and... In Stock £3,447.60 £1,577.13 Add to Cart