Philips PW 9410 digital pH meter

For Sale: Old Philips PW 9410 pH meter. If you know what it does, then you know more than I do. I bought this (don’t know why) at a CB rally years ago. It did power up and I connected an aerial to the bnc connector on the back and the digits changed on the readout anytime I touched the aerial. I presume there is a probe ( not included ) that connects to the bnc connector and that goes in the ground to test for the pH. It’s been sitting in my shed for over a decade so I don’t know what condition it’s in now. If someone wants me to wire it to the mains to see if it’s working I will. It’s being sold as seen so I can’t guarantee if it is actually working correctly or at all. Buyer will have to pay for postage if it needs posting and only use PayPal (friends & family) please. It might be worth a fortune or it might be worthless. That’s a chance we’re both taking. Thanks for looking anyway.