height master

metalwork equipment - hobbiest collection

Mitutoyo Height Master
made in Japan 1981

Condition when received from the second hand market


Many scratches on the surface	Scratches are standard after using many years in an industrial environmental	inside perfect	no scratches inside
Restauration of the wooden box Mitutoyo Height Master

Die Holzbox ist geschliffen, geölt und mit Schellack poliert Sandpaper, hard-oil and blond shellac.	Die Holzsorte kenne ich nicht, aber sie ist sehr schön geworden im geölten Zustand. I don`t know this kind of nice wood.	fine surface	Das Typenschild aus Papier ist auch nach 38 Jahren noch gut erhalten, das ist selten, besonders unter den rauhen Bedingungen einer Metallwerkstatt. Es ist hier mit Schellack überlackt, damit sollte es noch lange halten. Paper label, 38 years old in good condition.

safe standing inside the box original manual.	green felt cleaned	box also inside polished with shellac	such a precision instrument looks very good on the table cleaned in all details, metal surface covered with Ballistol

easy to hold on the side	front protection for the metal surface perfect condition, no scratches	0.001 millimeter resolution	this handwheel moveable like a mechanical dream

top view	Counter	lower section	lapped metal surface

handle holder	dust cover in perfect condition, cleaned, still soft	serial number photo flash has changed color	- perfect - Original Calibration Report

Hommel - Hommelwerke Mannheim - Präzisions Höhenmikrometer
made in Germany 197x

Condition when received from the second hand market


	dirty box, as expected	oil and dust
Restauration of the wooden box

sandpaper and a quick black shellac (not a time demanding full polish)	Instrument inside the box is almost unsed !	nice instrument	not one scratch

fast click-on extension, no screws necessary. Most extension are lost on the second hand market,	0.005 millimeter resolution	metal surface cleaned and protected with Ballistol	accessories unused

wheel mounted with a simple click	operating manual	description	different versions
I have a total collection of three Hommel and one Mitutoyo. With four instruments it is easy to bring a metall plate exactly in position parallel to the granit-plate. Main use was a reference for a adjustable height measurement system. Adjustable distance over the marking plate. Both manufactures offer also length extensions for a total measurement range 600mm, for the Hommel I`ve seen a extension up to 1200mm. A height master is a high precision instrument, the reference metall surfaces are polished and lapped for highest accuracy. When byuing a used one check the condition of the metal surfaces, especially the three polished metall stands and the moveable reference plate under the instrument. Adjusting and checking the correct dial of the instrument, requires a metal or ceramic calibration gauge and a flat marking plate, should be done if instrument is in unknown condition. Require a xx mm size of a gauge, but it is a common length in the mm grid. Check the movement of the spindle. In most cases these instruments were not daily used, but many are in a bad or unknown condition on the second hand market. In most cases the extensions, manuals and other accessories are lost, the boxes are in a bad, dirty condition and some having the worst: the metal surfaces are not well-tented or having marks and scratches causing problems with the accuracy. the Mitutoyo has a higher resolution and a very stable construction, more kilogramms and is a nice calibration tool. Further advantage, all metal measurement surfaces having no rotation when setting the hand-wheel. the advantage of the Hommel, the light weight makes it easy to carry and moveable on the marking-plate. The metal measurement surfaces are rotating when setting the hand-wheel, consider this in your application, be careful and avoid scratches in the instrument, gauge or in the DUT when rotating.

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