Heathkit described this as a laboratory scope. It is quite nicely made, at the top end of amateur quality and appropriate for a high-end kit. It does have regulated power supplies and triggered sweep but no calibrator. Compactrons are used in the regulators but you would not know, it is huge (and heavy) for its limited performance. It is heavily modelled on Tektronix including the CRT bezel, the boxes on the front panel that group the control functions and the power supply topology. While capable of making measurements, it is not a true laboratory scope however, it was well suited for serious amateurs, college learning labs and now, historical interest.
The basic specifications are:
Y; -3 dB at 8MHz, rise time 40nS, sensitivity, 50 mv/cm to 20 v/cm.
X; 0.5 S/cm to 200 nS/cm.
Heathkit saw fit to equip this beast with delay lines; it is not possible to completely eliminate the bumps and ripples that are characteristic of an unmatched delay line. The manual admits this. Speaking of which, why does this thing have delay lines, other than to sell it? Given that the time base maxes out at 0.2μS/cm and that above 2MHz, the triggering is useless, there will be no examining fast edges with this one, so the delay lines seem to be cosmetic. If you can enlighten me, please do so and I will update this post. This is the best I managed to capture the delay line settling aberrations. The display is actually much more clear than this photograph. The square wave source is a Tektronix 106 at 100kHz from the fast output.
An interesting feature is the DC coupled unblanking solution: To sumarise, Tektronix used separate CRT grid and cathode supplies with the ground end of the grid supply strapped to the unblanking cathode follower, Solartron and Dumont used a bistable riding on the CRT grid or cathode. Here, Heathkit have used a 1750 volt gas tube (Victoreen HV-173) to bridge the potential difference between the unblanking cathode follower and the CRT grid, I like this a lot, very simple and effective. Having said that, there is an issue; the gas tube maintains a fixed voltage between the unblanking cathode follower and the CRT grid so if the high voltage is not set perfectly, either there will be no trace or there will be a trace and the intensity control will not work.
In fairness, I imagine it sold for a lot less than anything comparable and did offer an amateur a presumably affordable, decently accurate scope, capable of making measurements, not just looking at waveforms; anything else I am aware of including other contemporary Heathkit offerings, would not be capable of making measurements. So, that is the context for this scope and a good reason to have it in this collection.
These days, we (I) am spoilt by the affordable availability of equipment that in its day would have been beyond the means of an amateur.