DECATHLON Hand Pump

thingiverse

For Inflatable Mattress from Decathlon Shop, Get Working with Hand Pump Manometer. To activate the hand pump manometer on your inflatable mattress, you need to get it working first. The one-way valve on the mattress prevents pressure from building up in the manometer. To fix this issue, use an adaptor that opens the valve. Once you've done this, the manometer will start working properly. That's all - now you can have fun with your inflatable mattress!