Amazon.com: Trodat Stamp 4912 Office Printy with English Text Return to Sender – Self Inking, Red and Blue Ink, Impression Size 3/4" x 1-7/8" : Office Products
Pressure Transducer Sender Sensor Transmitter Sensor for Oil Fuel Air Water 1/8"NPT Thread 1/8"-27 NPT. DC 5V(30PSI): Amazon.com: Industrial & Scientific