(a device that requires skill for proper use) 
instrument 
instrument, apparatus, device
~ pomiarowy measuring instrument, meter, gauge, (US) gage
~ optyczny optical instrument
~ rejestrujący recorder
~ pisakowy rejestrujący pen recorder
~ wskazujący indicator
tablica z ~dami control panel
 n masc C instrument
device
apparatus
 appliance
m device, apparatus, instrument, tool, gadget
m instrument, device ~ mierniczy gauge, measuring device, measuring instrument ~y nawigacyjne nautical instrumets
appliance n, device n, instrument n
appliance, instrument, apparatus, device
apparatus, device, instrument, appliance
APPLIANCE
ATTACHMENT
GADGET
CONTRAPTION
APPARATUS
CONTRIVANCE
DEVICE
m apparatus, instrument
tool
~ optyczny visual aid
 ~ pomiarowy gauge
 tablica ~ów instrument panel
 wskazania ~ów instrument reading
pointer
ruler
toaster