Dont see any sight glass, I do see some level plugs for the hydraulic fluid, but in not sure which one it could be, there seem to be two possible locations at different heights...If there is no dipstick, there will be a level plug and if no plug, a sight glass.
Awesome information.If you are anxious to get going with your tractor, here's what I can tell you based upon a Ford 3600 tractor:
Transmission fluid level check plug is just above your right foot toes as you are seated on the tractor. It is a SQUARE-headed pipe plug. The filler cap for the tranny will be by the gearshift levers. My tractor also has a dipstick by the tranny levers....yours may not.
Rear differential fluid level check plug MAY be above and behind your right heel as you are seated on the tractor. SQUARE headed pipe plug. Don't touch any screws or bolts if you cannot find it. The bigger tractors vary from my little 3600 for the rear end fluid level check plug. Filler cap for rear end is on top of the differential housing, behind your right butt cheek as you are seated on the tractor. .
Power steering - fill the reservoir to the base of the filler cap neck.