Thomas No. 1188J13: Hard Carrying Case (Small "Lunch Box" Size) for use with MW Portable Meters, Protective Case for the following "MW" Series Meters -- MW100 - MW101 - MW102 - MW301 - MW302 - MW401 - MW402 - MW500
Thomas No. 1188J14: Hard Carrying Case (Thin Brief Case Size) with Interior Padding & Cut Outs for 2 "MW" Units or for 1 MW600 DO Meter
Thomas No. 1188J15: For all Refractometers & Photometers - Case has protective upper and lower cut out padding