Hello, when the first 747-100's were delivered to the customers they could choose wich avionics they wanted and as a result almost all 747-classic cockpits look different, some airlines choosed the vertical tape style instrument as there engine gauges because the engine indications could easier be compared then when you use a round one, the round instruments used more space on the instrument panel to.
This revolution from round to vertical tape instruments could be seen in other instruments to, for instance the radio-altimeter, while most 747-operators had round engine instruments and a vertical tape radio altimeter KLM has Vertical tape engine instruments and a round Radio-altimeter.
With the 737-300 and 757/767 an airspeed tape apeared aside the ADI and in the 747-400 almost everything was vertical tape-style wich was off course a big step for pilots that were used to the classic dials.
Mc-Donnel Douglas gave there operators a choice on the MD-11 with the touch of a button they could change from vertical tape to round engine instruments.
You can see the dials coming back on the ADI too in the newest avionics suites for the smaller bizjets.
Regards Marco Blauwhof
I've seen two major designs for the engine instruments on the older 747s. The first is the traditional dial arrangement, which I've seen on 747-100s, -200s, and -300s. On some of the -200s and -300s, I've seen vertical bar "tape" instruments in place of the dials. I'm sure there are pictures of both on airliners.net. Some airlines have also upgraded the original instruments. On a picture of a Northwest 747-200 once I saw where they had torn out the analog engine instruments and filled the space with a digital screen.