MAHR MaraMeter 844 N Self-centering dial bore gages

Description

Measuring head consists of a carbide tipped moving anvil and an interchangeable stationary anvil with a hardened steel ball
Transmission lever system transfers movement of movable anvil to indicating instrument
The broad centering bridge ensures automatic centering in the bore
Resistant to temperature because the shank and transfer rod are made of heat resistant Invar steel
Highly resistant to wear and tear because of carbide tipped moving anvil
Constant measuring force due to built-in spring, eliminating user influence
Universally applicable and extremely versatile
– Each instrument spans a broad measuring range
– Quick and easy to adjust to any size (within its range)
Extensive modular system is composed of measuring head, holder, extensions, right angle attachments and depth stops
Invar steel has a particularly low expansion coefficient
– instrument totally insensitive to any kind of heat (including user body heat and increased ambient temperature)

Measuring head consists of a carbide-tipped, movable measuring pin and an opposing interchangeable stationary counter probe with carbide ball
Movements of the measuring pin are transmitted to the indicating instrument via the ring segment
The broad centering bridge ensures automatic centering in the bore
Insensitive to temperature due to both the shaft and the transfer rod being made from Invar steel
Carbide-tipped measuring contacts for high wear resistance
Constant measuring force thanks to inbuilt measuring force spring. Measuring results are therefore independent of personal sense of touch
Universally applicable. Every instrument spans a broad measuring range. Within this range it is quick and easy to adjust to any size
Measuring head, measuring instrument holder, depth extensions, right-angle attachments, and depth stops form a comprehensive modular system
Invar steel makes the inner measuring device insensitive to temperature influences of any kind. Body heat from the user or a rise in ambient temperature in the workplace have virtually no influence on measuring results

Measuring head consists of a carbide tipped moving anvil and an interchangeable stationary anvil with a carbide ball
Transmission lever system transfers movement of movable anvil to indicating instrument
The broad centering bridge ensures automatic centering in the bore
Resistant to temperature because the shank and transfer rod are made of heat resistant Invar steel
Highly resistant to wear and tear because of carbide tipped moving anvil
Constant measuring force due to built-in spring, eliminating user influence
Universally applicable and extremely versatile
– Each instrument spans a broad measuring range
– Quick and easy to adjust to any size (within its range)
Invar steel has a particularly low expansion coefficient
– instrument totally insensitive to any kind of heat (including user body heat and increased ambient temperature)

Measuring head consists of a carbide-tipped, movable measuring pin and an opposing interchangeable stationary measuring anvil with carbide ball
Stationary measuring pin can pivot by 180°. This results in a very long return travel path of up to 40% of the bore to be measured
Movements of the measuring pin are transmitted to the indicating instrument via the ring segment
The broad centering bridge ensures automatic centering in the bore
Insensitive to temperature due to both the shaft and the transfer rod being made from Invar steel
Carbide-tipped measuring contacts for high wear resistance
Constant measuring force thanks to inbuilt measuring force spring. Measuring results are therefore independent of personal sense of touch
Universally applicable. Every instrument spans a broad measuring range. Within this range it is quick and easy to adjust to any size
Invar steel makes the inner measuring device insensitive to temperature influences of any kind. Body heat from the user or a rise in ambient temperature in the workplace have virtually no influence on measuring results

Order no.	Product type	Measuring range inch	Measuring range mm	Distance of movable anvil_mm	Repeatability fw (µm)	Error limit Ge (µm)	Measuring depth mm
4474000	844 N	.7 – 2″	18 – 50	1.3 mm	0.5 µm	2 µm	115 mm
4474001	844 N	1.4 – 4″	35 – 100	1.3 mm	0.5 µm	2 µm	148 mm
4474002	844 N	4 – 10″	100 – 250	1.6 mm	0.5 µm	2 µm	230 mm
4474003	844 N	10 – 16″	250 – 400	2.6 mm	1.5 µm	3 µm	366 mm
4474004	844 N	16 – 32″	400 – 800	2.6 mm	1.5 µm	3 µm	366 mm
4474005	844 N	10 – 32″	250 – 800	2.6 mm	1.5 µm	3 µm	366 mm

Order no.	Product type	Measuring range inch	Measuring range mm	Distance of movable anvil_mm	Repeatability fw (µm)	Error limit Ge (µm)	Measuring depth mm
4475000	844 NH	.7 – 2″	18 – 50	1.3 mm	0.5 µm	2 µm	115 mm
4475001	844 NH	1.4 – 4″	35 – 100	1.3 mm	0.5 µm	2 µm	148 mm
4475002	844 NH	4 – 10″	100 – 250	1.6 mm	0.5 µm	2 µm	230 mm
4475003	844 NH	10 – 16″	250 – 400	2.6 mm	1.5 µm	3 µm	336 mm
4475004	844 NH	16 – 32″	400 – 800	2.6 mm	1.5 µm	3 µm	336 mm
4475005	844 NH	10 – 32″	250 – 800	2.6 mm	1.5 µm	3 µm	336 mm

Order no.	Product type	Measuring range inch	Measuring range mm	Repeatability fw (µm)	Error limit Ge (µm)
4474179	844 NB	0.79 – 2″	20 – 50	1 µm	4 µm
4474180	844 NB	2 – 4.33″	50 – 110	1 µm	3 µm
4474186	844 NB	4.33 – 11.81″	110 – 300	1 µm	2.5 µm

MaraMeter 844 NR Self-centering dial bore gage

Order no.	Product type	Measuring range inch	Measuring range mm	Repeatability fw (µm)	Error limit Ge (µm)	Measuring depth mm
4474580	844 NR	2 – 2.8″	50 – 70	1 µm	2 µm	60 mm
4474590	844 NR	2.4 – 4″	60 – 100	1 µm	2 µm	60 mm
4474600	844 NR	3.2 – 6″	80 – 150	1 µm	2 µm	95 mm
4474610	844 NR	4.7 – 8.7″	120 – 220	1 µm	2 µm	107 mm
4474620	844 NR	7.1 – 14.2″	180 – 360	1.5 µm	3 µm	148 mm
4474630	844 NR	11.4 – 20.7″	290 – 530	1.5 µm	3 µm	170 mm