Amazing thankyou mateI used my old Angel gauges but you can use these;
http://www.ebay.co.uk/itm/63mm-Hydraulic-Pressure-Gauge-Base-Or-Rear-Entry-Available-Free-UK-Delivery-/251094494819?pt=LH_DefaultDomain_3&var=&hash=item3a7665ee63
select;
0-600psi
base or rear entry (your preference)
http://www.ebay.co.uk/itm/NPT-Male-to-BSP-Fem-Nipple-Extension-American-to-bsp-Steel-Hydraulic-Adapters-/131210292119?pt=LH_DefaultDomain_3&var=&hash=item1e8cbe2b97
select;
male 1/8 NPT
female 1/4 BSP
hope it helps