: Press INCREASE or DECREASE to cycle through four volume levels (High, Middle, Low, and No alarm).
to set the desired time. Press the "REMINDER" button to save the set time. Press the channel number again to start the countdown. 2. Adjusting the Alarm Volume
Do not force the reset knob while the movement is running. This is the #1 cause of broken pivots in CAL6B units. cal6b calculagraph manual
These units were typically mounted inside wooden boxes (Western Electric) or metal housings (IBM/Remington Rand). The "manual" we seek typically covers: Setting the typewheels, engaging the clutch, reading the concentric dials, and lubrication schedules.
Insert the correct size clock key (typically included with original units). : Press INCREASE or DECREASE to cycle through
This is caused by a slipping friction clutch. Open the mechanism and inspect the tension spring on the main drive wheel. If it has loosened, tighten the retaining collar slightly until the elapsed time wheels turn in perfect synchronization with the main clock face wheels. Problem: The card gets stuck in the slot.
Press the specific Channel Key (1-6) once. The LED will immediately begin counting down. Press the channel number again to start the countdown
Replace the ribbon. Ensure the levers are pulled with a swift, firm, complete stroke.
The Model 6, and by extension the CAL6B, is a masterpiece of mechanical engineering. Encased in a robust wooden or metal housing, it contained a high-precision clockwork mechanism and a gear-based system of three printing wheels. These wheels were responsible for printing the elapsed time onto a standardized ticket. Its operation was satisfyingly tactile: two handles on the side of the unit, one for the call start and one for the call end. The Model 6 is a testament to an era when complex calculations were solved with gears, springs, and levers rather than silicon chips. The "CAL6B" designation likely refers to a specific sub-model or production variant of the base Model 6 design, indicating a particular configuration for a specific client, such as a major telephone company.